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Playwright API Tip-Of-Tree

Table of Contents

Playwright module

Playwright module provides a method to launch a browser instance. The following is a typical example of using Playwright to drive automation:

const { chromium, firefox, webkit } = require('playwright');

(async () => {
  const browser = await chromium.launch();  // Or 'firefox' or 'webkit'.
  const page = await browser.newPage();
  await page.goto('http://example.com');
  // other actions...
  await browser.close();
})();

By default, the playwright NPM package automatically downloads browser executables during installation. The playwright-core NPM package can be used to skip automatic downloads.

playwright.chromium

This object can be used to launch or connect to Chromium, returning instances of ChromiumBrowser.

playwright.devices

Returns a list of devices to be used with browser.newContext([options]) or browser.newPage([options]). Actual list of devices can be found in src/server/deviceDescriptors.ts.

const { webkit, devices } = require('playwright');
const iPhone = devices['iPhone 6'];

(async () => {
  const browser = await webkit.launch();
  const context = await browser.newContext({
    ...iPhone
  });
  const page = await context.newPage();
  await page.goto('http://example.com');
  // other actions...
  await browser.close();
})();

playwright.errors

Playwright methods might throw errors if they are unable to fulfill a request. For example, page.waitForSelector(selector[, options]) might fail if the selector doesn't match any nodes during the given timeframe.

For certain types of errors Playwright uses specific error classes. These classes are available via playwright.errors.

An example of handling a timeout error:

try {
  await page.waitForSelector('.foo');
} catch (e) {
  if (e instanceof playwright.errors.TimeoutError) {
    // Do something if this is a timeout.
  }
}

playwright.firefox

This object can be used to launch or connect to Firefox, returning instances of FirefoxBrowser.

playwright.selectors

Selectors can be used to install custom selector engines. See Working with selectors for more information.

playwright.webkit

This object can be used to launch or connect to WebKit, returning instances of WebKitBrowser.

class: Browser

A Browser is created when Playwright connects to a browser instance, either through browserType.launch or browserType.connect.

An example of using a Browser to create a Page:

const { firefox } = require('playwright');  // Or 'chromium' or 'webkit'.

(async () => {
  const browser = await firefox.launch();
  const page = await browser.newPage();
  await page.goto('https://example.com');
  await browser.close();
})();

See ChromiumBrowser, FirefoxBrowser and WebKitBrowser for browser-specific features. Note that browserType.connect(options) and browserType.launch([options]) always return a specific browser instance, based on the browser being connected to or launched.

event: 'disconnected'

Emitted when Browser gets disconnected from the browser application. This might happen because of one of the following:

  • Browser application is closed or crashed.
  • The browser.close method was called.

browser.close()

In case this browser is obtained using browserType.launch, closes the browser and all of its pages (if any were opened).

In case this browser is obtained using browserType.connect, clears all created contexts belonging to this browser and disconnects from the browser server.

The Browser object itself is considered to be disposed and cannot be used anymore.

browser.contexts()

Returns an array of all open browser contexts. In a newly created browser, this will return zero browser contexts.

const browser = await pw.webkit.launch();
console.log(browser.contexts().length); // prints `0`

const context = await browser.newContext();
console.log(browser.contexts().length); // prints `1`

browser.isConnected()

Indicates that the browser is connected.

browser.newContext([options])

  • options <Object>
    • acceptDownloads <boolean> Whether to automatically download all the attachments. Defaults to false where all the downloads are canceled.
    • ignoreHTTPSErrors <boolean> Whether to ignore HTTPS errors during navigation. Defaults to false.
    • bypassCSP <boolean> Toggles bypassing page's Content-Security-Policy.
    • viewport <null|Object> Sets a consistent viewport for each page. Defaults to an 1280x720 viewport. null disables the default viewport.
      • width <number> page width in pixels.
      • height <number> page height in pixels.
    • userAgent <string> Specific user agent to use in this context.
    • deviceScaleFactor <number> Specify device scale factor (can be thought of as dpr). Defaults to 1.
    • isMobile <boolean> Whether the meta viewport tag is taken into account and touch events are enabled. Defaults to false. Not supported in Firefox.
    • hasTouch <boolean> Specifies if viewport supports touch events. Defaults to false.
    • javaScriptEnabled <boolean> Whether or not to enable JavaScript in the context. Defaults to true.
    • timezoneId <string> Changes the timezone of the context. See ICU’s metaZones.txt for a list of supported timezone IDs.
    • geolocation <Object>
      • latitude <number> Latitude between -90 and 90.
      • longitude <number> Longitude between -180 and 180.
      • accuracy <number> Non-negative accuracy value. Defaults to 0.
    • locale <string> Specify user locale, for example en-GB, de-DE, etc. Locale will affect navigator.language value, Accept-Language request header value as well as number and date formatting rules.
    • permissions <Array<string>> A list of permissions to grant to all pages in this context. See browserContext.grantPermissions for more details.
    • extraHTTPHeaders <Object<string, string>> An object containing additional HTTP headers to be sent with every request. All header values must be strings.
    • offline <boolean> Whether to emulate network being offline. Defaults to false.
    • httpCredentials <Object> Credentials for HTTP authentication.
    • colorScheme <"light"|"dark"|"no-preference"> Emulates 'prefers-colors-scheme' media feature, supported values are 'light', 'dark', 'no-preference'. See page.emulateMedia(options) for more details. Defaults to 'light'.
    • logger <Logger> Logger sink for Playwright logging.
  • returns: <Promise<BrowserContext>>

Creates a new browser context. It won't share cookies/cache with other browser contexts.

(async () => {
  const browser = await playwright.firefox.launch();  // Or 'chromium' or 'webkit'.
  // Create a new incognito browser context.
  const context = await browser.newContext();
  // Create a new page in a pristine context.
  const page = await context.newPage();
  await page.goto('https://example.com');
})();

browser.newPage([options])

  • options <Object>
    • acceptDownloads <boolean> Whether to automatically download all the attachments. Defaults to false where all the downloads are canceled.
    • ignoreHTTPSErrors <boolean> Whether to ignore HTTPS errors during navigation. Defaults to false.
    • bypassCSP <boolean> Toggles bypassing page's Content-Security-Policy.
    • viewport <null|Object> Sets a consistent viewport for each page. Defaults to an 1280x720 viewport. null disables the default viewport.
      • width <number> page width in pixels.
      • height <number> page height in pixels.
    • userAgent <string> Specific user agent to use in this context.
    • deviceScaleFactor <number> Specify device scale factor (can be thought of as dpr). Defaults to 1.
    • isMobile <boolean> Whether the meta viewport tag is taken into account and touch events are enabled. Defaults to false. Not supported in Firefox.
    • hasTouch <boolean> Specifies if viewport supports touch events. Defaults to false.
    • javaScriptEnabled <boolean> Whether or not to enable JavaScript in the context. Defaults to true.
    • timezoneId <string> Changes the timezone of the context. See ICU’s metaZones.txt for a list of supported timezone IDs.
    • geolocation <Object>
      • latitude <number> Latitude between -90 and 90.
      • longitude <number> Longitude between -180 and 180.
      • accuracy <number> Non-negative accuracy value. Defaults to 0.
    • locale <string> Specify user locale, for example en-GB, de-DE, etc. Locale will affect navigator.language value, Accept-Language request header value as well as number and date formatting rules.
    • permissions <Array<string>> A list of permissions to grant to all pages in this context. See browserContext.grantPermissions for more details.
    • extraHTTPHeaders <Object<string, string>> An object containing additional HTTP headers to be sent with every request. All header values must be strings.
    • offline <boolean> Whether to emulate network being offline. Defaults to false.
    • httpCredentials <Object> Credentials for HTTP authentication.
    • colorScheme <"light"|"dark"|"no-preference"> Emulates 'prefers-colors-scheme' media feature, supported values are 'light', 'dark', 'no-preference'. See page.emulateMedia(options) for more details. Defaults to 'light'.
    • logger <Logger> Logger sink for Playwright logging.
  • returns: <Promise<Page>>

Creates a new page in a new browser context. Closing this page will close the context as well.

This is a convenience API that should only be used for the single-page scenarios and short snippets. Production code and testing frameworks should explicitly create browser.newContext followed by the browserContext.newPage to control their exact life times.

browser.version()

Returns the browser version.

class: BrowserContext

BrowserContexts provide a way to operate multiple independent browser sessions.

If a page opens another page, e.g. with a window.open call, the popup will belong to the parent page's browser context.

Playwright allows creation of "incognito" browser contexts with browser.newContext() method. "Incognito" browser contexts don't write any browsing data to disk.

// Create a new incognito browser context
const context = await browser.newContext();
// Create a new page inside context.
const page = await context.newPage();
await page.goto('https://example.com');
// Dispose context once it's no longer needed.
await context.close();

event: 'close'

Emitted when Browser context gets closed. This might happen because of one of the following:

  • Browser context is closed.
  • Browser application is closed or crashed.
  • The browser.close method was called.

event: 'page'

The event is emitted when a new Page is created in the BrowserContext. The page may still be loading. The event will also fire for popup pages. See also Page.on('popup') to receive events about popups relevant to a specific page.

The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with window.open('http://example.com'), this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.

const [page] = await Promise.all([
  context.waitForEvent('page'),
  page.click('a[target=_blank]'),
]);
console.log(await page.evaluate('location.href'));

Note

Use page.waitForLoadState([state[, options]]) to wait until the page gets to a particular state (you should not need it in most cases).

browserContext.addCookies(cookies)

  • cookies <Array<Object>>
    • name <string> required
    • value <string> required
    • url <string> either url or domain / path are required
    • domain <string> either url or domain / path are required
    • path <string> either url or domain / path are required
    • expires <number> Unix time in seconds.
    • httpOnly <boolean>
    • secure <boolean>
    • sameSite <"Strict"|"Lax"|"None">
  • returns: <Promise>
await browserContext.addCookies([cookieObject1, cookieObject2]);

browserContext.addInitScript(script[, arg])

Adds a script which would be evaluated in one of the following scenarios:

  • Whenever a page is created in the browser context or is navigated.
  • Whenever a child frame is attached or navigated in any page in the browser context. In this case, the script is evaluated in the context of the newly attached frame.

The script is evaluated after the document was created but before any of its scripts were run. This is useful to amend the JavaScript environment, e.g. to seed Math.random.

An example of overriding Math.random before the page loads:

// preload.js
Math.random = () => 42;

// In your playwright script, assuming the preload.js file is in same folder.
await browserContext.addInitScript({
  path: 'preload.js'
});

Note

The order of evaluation of multiple scripts installed via browserContext.addInitScript(script[, arg]) and page.addInitScript(script[, arg]) is not defined.

browserContext.clearCookies()

Clears context cookies.

browserContext.clearPermissions()

Clears all permission overrides for the browser context.

const context = await browser.newContext();
await context.grantPermissions(['clipboard-read']);
// do stuff ..
context.clearPermissions();

browserContext.close()

Closes the browser context. All the pages that belong to the browser context will be closed.

Note

the default browser context cannot be closed.

browserContext.cookies([urls])

If no URLs are specified, this method returns all cookies. If URLs are specified, only cookies that affect those URLs are returned.

browserContext.exposeBinding(name, playwrightBinding)

  • name <string> Name of the function on the window object.
  • playwrightBinding <function> Callback function that will be called in the Playwright's context.
  • returns: <Promise>

The method adds a function called name on the window object of every frame in every page in the context. When called, the function executes playwrightBinding in Node.js and returns a Promise which resolves to the return value of playwrightBinding. If the playwrightBinding returns a Promise, it will be awaited.

The first argument of the playwrightBinding function contains information about the caller: { browserContext: BrowserContext, page: Page, frame: Frame }.

See page.exposeBinding(name, playwrightBinding) for page-only version.

An example of exposing page URL to all frames in all pages in the context:

const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.

(async () => {
  const browser = await webkit.launch({ headless: false });
  const context = await browser.newContext();
  await context.exposeBinding('pageURL', ({ page }) => page.url());
  const page = await context.newPage();
  await page.setContent(`
    <script>
      async function onClick() {
        document.querySelector('div').textContent = await window.pageURL();
      }
    </script>
    <button onclick="onClick()">Click me</button>
    <div></div>
  `);
  await page.click('button');
})();

browserContext.exposeFunction(name, playwrightFunction)

  • name <string> Name of the function on the window object.
  • playwrightFunction <function> Callback function that will be called in the Playwright's context.
  • returns: <Promise>

The method adds a function called name on the window object of every frame in every page in the context. When called, the function executes playwrightFunction in Node.js and returns a Promise which resolves to the return value of playwrightFunction.

If the playwrightFunction returns a Promise, it will be awaited.

See page.exposeFunction(name, playwrightFunction) for page-only version.

An example of adding an md5 function to all pages in the context:

const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.
const crypto = require('crypto');

(async () => {
  const browser = await webkit.launch({ headless: false });
  const context = await browser.newContext();
  await context.exposeFunction('md5', text => crypto.createHash('md5').update(text).digest('hex'));
  const page = await context.newPage();
  await page.setContent(`
    <script>
      async function onClick() {
        document.querySelector('div').textContent = await window.md5('PLAYWRIGHT');
      }
    </script>
    <button onclick="onClick()">Click me</button>
    <div></div>
  `);
  await page.click('button');
})();

browserContext.grantPermissions(permissions[][, options])

  • permissions <Array<string>> A permission or an array of permissions to grant. Permissions can be one of the following values:
    • '*'
    • 'geolocation'
    • 'midi'
    • 'midi-sysex' (system-exclusive midi)
    • 'notifications'
    • 'push'
    • 'camera'
    • 'microphone'
    • 'background-sync'
    • 'ambient-light-sensor'
    • 'accelerometer'
    • 'gyroscope'
    • 'magnetometer'
    • 'accessibility-events'
    • 'clipboard-read'
    • 'clipboard-write'
    • 'payment-handler'
  • options <Object>
  • returns: <Promise>

Grants specified permissions to the browser context. Only grants corresponding permissions to the given origin if specified.

browserContext.newPage()

Creates a new page in the browser context.

browserContext.pages()

browserContext.route(url, handler)

Routing provides the capability to modify network requests that are made by any page in the browser context. Once route is enabled, every request matching the url pattern will stall unless it's continued, fulfilled or aborted.

An example of a naïve handler that aborts all image requests:

const context = await browser.newContext();
await context.route('**/*.{png,jpg,jpeg}', route => route.abort());
const page = await context.newPage();
await page.goto('https://example.com');
await browser.close();

or the same snippet using a regex pattern instead:

const context = await browser.newContext();
await context.route(/(\.png$)|(\.jpg$)/, route => route.abort());
const page = await context.newPage();
await page.goto('https://example.com');
await browser.close();

Page routes (set up with page.route(url, handler)) take precedence over browser context routes when request matches both handlers.

Note

Enabling routing disables http cache.

browserContext.setDefaultNavigationTimeout(timeout)

  • timeout <number> Maximum navigation time in milliseconds

This setting will change the default maximum navigation time for the following methods and related shortcuts:

Note

page.setDefaultNavigationTimeout and page.setDefaultTimeout take priority over browserContext.setDefaultNavigationTimeout.

browserContext.setDefaultTimeout(timeout)

  • timeout <number> Maximum time in milliseconds

This setting will change the default maximum time for all the methods accepting timeout option.

Note

page.setDefaultNavigationTimeout, page.setDefaultTimeout and browserContext.setDefaultNavigationTimeout take priority over browserContext.setDefaultTimeout.

browserContext.setExtraHTTPHeaders(headers)

  • headers <Object<string, string>> An object containing additional HTTP headers to be sent with every request. All header values must be strings.
  • returns: <Promise>

The extra HTTP headers will be sent with every request initiated by any page in the context. These headers are merged with page-specific extra HTTP headers set with page.setExtraHTTPHeaders(). If page overrides a particular header, page-specific header value will be used instead of the browser context header value.

Note

browserContext.setExtraHTTPHeaders does not guarantee the order of headers in the outgoing requests.

browserContext.setGeolocation(geolocation)

  • geolocation <null|Object>
    • latitude <number> Latitude between -90 and 90. required
    • longitude <number> Longitude between -180 and 180. required
    • accuracy <number> Non-negative accuracy value. Defaults to 0.
  • returns: <Promise>

Sets the context's geolocation. Passing null or undefined emulates position unavailable.

await browserContext.setGeolocation({latitude: 59.95, longitude: 30.31667});

Note

Consider using browserContext.grantPermissions to grant permissions for the browser context pages to read its geolocation.

browserContext.setHTTPCredentials(httpCredentials)

Provide credentials for HTTP authentication.

Note

Browsers may cache credentials after successful authentication. Passing different credentials or passing null to disable authentication will be unreliable. To remove or replace credentials, create a new browser context instead.

browserContext.setOffline(offline)

  • offline <boolean> Whether to emulate network being offline for the browser context.
  • returns: <Promise>

browserContext.unroute(url[, handler])

Removes a route created with browserContext.route(url, handler). When handler is not specified, removes all routes for the url.

browserContext.waitForEvent(event[, optionsOrPredicate])

  • event <string> Event name, same one would pass into browserContext.on(event).
  • optionsOrPredicate <Function|Object> Either a predicate that receives an event or an options object.
    • predicate <Function> receives the event data and resolves to truthy value when the waiting should resolve.
    • timeout <number> maximum time to wait for in milliseconds. Defaults to 30000 (30 seconds). Pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout).
  • returns: <Promise<Object>> Promise which resolves to the event data value.

Waits for event to fire and passes its value into the predicate function. Resolves when the predicate returns truthy value. Will throw an error if the context closes before the event is fired.

const context = await browser.newContext();
await context.grantPermissions(['geolocation']);

class: Page

Page provides methods to interact with a single tab in a Browser, or an extension background page in Chromium. One Browser instance might have multiple Page instances.

This example creates a page, navigates it to a URL, and then saves a screenshot:

const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.

(async () => {
  const browser = await webkit.launch();
  const context = await browser.newContext();
  const page = await context.newPage();
  await page.goto('https://example.com');
  await page.screenshot({path: 'screenshot.png'});
  await browser.close();
})();

The Page class emits various events (described below) which can be handled using any of Node's native EventEmitter methods, such as on, once or removeListener.

This example logs a message for a single page load event:

page.once('load', () => console.log('Page loaded!'));

To unsubscribe from events use the removeListener method:

function logRequest(interceptedRequest) {
  console.log('A request was made:', interceptedRequest.url());
}
page.on('request', logRequest);
// Sometime later...
page.removeListener('request', logRequest);

event: 'close'

Emitted when the page closes.

event: 'console'

Emitted when JavaScript within the page calls one of console API methods, e.g. console.log or console.dir. Also emitted if the page throws an error or a warning.

The arguments passed into console.log appear as arguments on the event handler.

An example of handling console event:

page.on('console', msg => {
  for (let i = 0; i < msg.args().length; ++i)
    console.log(`${i}: ${msg.args()[i]}`);
});
page.evaluate(() => console.log('hello', 5, {foo: 'bar'}));

event: 'crash'

Emitted when the page crashes. Browser pages might crash if they try to allocate too much memory. When the page crashes, ongoing and subsequent operations will throw.

The most common way to deal with crashes is to catch an exception:

try {
  // Crash might happen during a click.
  await page.click('button');
  // Or while waiting for an event.
  await page.waitForEvent('popup');
} catch (e) {
  // When the page crashes, exception message contains 'crash'.
}

However, when manually listening to events, it might be useful to avoid stalling when the page crashes. In this case, handling crash event helps:

await new Promise((resolve, reject) => {
  page.on('requestfinished', async request => {
    if (await someProcessing(request))
      resolve(request);
  });
  page.on('crash', error => reject(error));
});

event: 'dialog'

Emitted when a JavaScript dialog appears, such as alert, prompt, confirm or beforeunload. Playwright can respond to the dialog via Dialog's accept or dismiss methods.

event: 'domcontentloaded'

Emitted when the JavaScript DOMContentLoaded event is dispatched.

event: 'download'

Emitted when attachment download started. User can access basic file operations on downloaded content via the passed Download instance.

Note

Browser context must be created with the acceptDownloads set to true when user needs access to the downloaded content. If acceptDownloads is not set or set to false, download events are emitted, but the actual download is not performed and user has no access to the downloaded files.

event: 'filechooser'

Emitted when a file chooser is supposed to appear, such as after clicking the <input type=file>. Playwright can respond to it via setting the input files using fileChooser.setFiles that can be uploaded after that.

page.on('filechooser', async (fileChooser) => {
  await fileChooser.setFiles('/tmp/myfile.pdf');
});

event: 'frameattached'

Emitted when a frame is attached.

event: 'framedetached'

Emitted when a frame is detached.

event: 'framenavigated'

Emitted when a frame is navigated to a new url.

event: 'load'

Emitted when the JavaScript load event is dispatched.

event: 'pageerror'

  • <Error> The exception message

Emitted when an uncaught exception happens within the page.

event: 'popup'

  • <Page> Page corresponding to "popup" window

Emitted when the page opens a new tab or window. This event is emitted in addition to the browserContext.on('page'), but only for popups relevant to this page.

The earliest moment that page is available is when it has navigated to the initial url. For example, when opening a popup with window.open('http://example.com'), this event will fire when the network request to "http://example.com" is done and its response has started loading in the popup.

const [popup] = await Promise.all([
  page.waitForEvent('popup'),
  page.evaluate(() => window.open('https://example.com')),
]);
console.log(await popup.evaluate('location.href'));

Note

Use page.waitForLoadState([state[, options]]) to wait until the page gets to a particular state (you should not need it in most cases).

event: 'request'

Emitted when a page issues a request. The request object is read-only. In order to intercept and mutate requests, see page.route() or browserContext.route().

event: 'requestfailed'

Emitted when a request fails, for example by timing out.

Note

HTTP Error responses, such as 404 or 503, are still successful responses from HTTP standpoint, so request will complete with 'requestfinished' event and not with 'requestfailed'.

event: 'requestfinished'

Emitted when a request finishes successfully after downloading the response body. For a successful response, the sequence of events is request, response and requestfinished.

event: 'response'

Emitted when response status and headers are received for a request. For a successful response, the sequence of events is request, response and requestfinished.

event: 'worker'

Emitted when a dedicated WebWorker is spawned by the page.

page.$(selector)

The method finds an element matching the specified selector within the page. If no elements match the selector, the return value resolves to null.

Shortcut for page.mainFrame().$(selector).

page.$$(selector)

The method finds all elements matching the specified selector within the page. If no elements match the selector, the return value resolves to [].

Shortcut for page.mainFrame().$$(selector).

page.$eval(selector, pageFunction[, arg])

The method finds an element matching the specified selector within the page and passes it as a first argument to pageFunction. If no elements match the selector, the method throws an error.

If pageFunction returns a Promise, then page.$eval would wait for the promise to resolve and return its value.

Examples:

const searchValue = await page.$eval('#search', el => el.value);
const preloadHref = await page.$eval('link[rel=preload]', el => el.href);
const html = await page.$eval('.main-container', (e, suffix) => e.outerHTML + suffix, 'hello');

Shortcut for page.mainFrame().$eval(selector, pageFunction).

page.$$eval(selector, pageFunction[, arg])

The method finds all elements matching the specified selector within the page and passes an array of matched elements as a first argument to pageFunction.

If pageFunction returns a Promise, then page.$$eval would wait for the promise to resolve and return its value.

Examples:

const divsCounts = await page.$$eval('div', (divs, min) => divs.length >= min, 10);

page.accessibility

page.addInitScript(script[, arg])

Adds a script which would be evaluated in one of the following scenarios:

  • Whenever the page is navigated.
  • Whenever the child frame is attached or navigated. In this case, the script is evaluated in the context of the newly attached frame.

The script is evaluated after the document was created but before any of its scripts were run. This is useful to amend the JavaScript environment, e.g. to seed Math.random.

An example of overriding Math.random before the page loads:

// preload.js
Math.random = () => 42;

// In your playwright script, assuming the preload.js file is in same folder
const preloadFile = fs.readFileSync('./preload.js', 'utf8');
await page.addInitScript(preloadFile);

Note

The order of evaluation of multiple scripts installed via browserContext.addInitScript(script[, arg]) and page.addInitScript(script[, arg]) is not defined.

page.addScriptTag(options)

  • options <Object>
    • url <string> URL of a script to be added.
    • path <string> Path to the JavaScript file to be injected into frame. If path is a relative path, then it is resolved relative to current working directory.
    • content <string> Raw JavaScript content to be injected into frame.
    • type <string> Script type. Use 'module' in order to load a Javascript ES6 module. See script for more details.
  • returns: <Promise<ElementHandle>> which resolves to the added tag when the script's onload fires or when the script content was injected into frame.

Adds a <script> tag into the page with the desired url or content.

Shortcut for page.mainFrame().addScriptTag(options).

page.addStyleTag(options)

  • options <Object>
    • url <string> URL of the <link> tag.
    • path <string> Path to the CSS file to be injected into frame. If path is a relative path, then it is resolved relative to current working directory.
    • content <string> Raw CSS content to be injected into frame.
  • returns: <Promise<ElementHandle>> which resolves to the added tag when the stylesheet's onload fires or when the CSS content was injected into frame.

Adds a <link rel="stylesheet"> tag into the page with the desired url or a <style type="text/css"> tag with the content.

Shortcut for page.mainFrame().addStyleTag(options).

page.bringToFront()

Brings page to front (activates tab).

page.check(selector, [options])

  • selector <string> A selector to search for checkbox or radio button to check. If there are multiple elements satisfying the selector, the first will be checked. See working with selectors for more details.
  • options <Object>
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element matching selector is successfully checked.

This method checks an element matching selector by performing the following steps:

  1. Find an element match matching selector. If there is none, wait until a matching element is attached to the DOM.
  2. Ensure that matched element is a checkbox or a radio input. If not, this method rejects. If the element is already checked, this method returns immediately.
  3. Wait for actionability checks on the matched element, unless force option is set. If the element is detached during the checks, the whole action is retried.
  4. Scroll the element into view if needed.
  5. Use page.mouse to click in the center of the element.
  6. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set.
  7. Ensure that the element is now checked. If not, this method rejects.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

Shortcut for page.mainFrame().check(selector[, options]).

page.click(selector[, options])

  • selector <string> A selector to search for element to click. If there are multiple elements satisfying the selector, the first will be clicked. See working with selectors for more details.
  • options <Object>
    • button <"left"|"right"|"middle"> Defaults to left.
    • clickCount <number> defaults to 1. See UIEvent.detail.
    • delay <number> Time to wait between mousedown and mouseup in milliseconds. Defaults to 0.
    • position <Object> A point to click relative to the top-left corner of element padding box. If not specified, clicks to some visible point of the element.
    • modifiers <Array<"Alt"|"Control"|"Meta"|"Shift">> Modifier keys to press. Ensures that only these modifiers are pressed during the click, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element matching selector is successfully clicked.

This method clicks an element matching selector by performing the following steps:

  1. Find an element match matching selector. If there is none, wait until a matching element is attached to the DOM.
  2. Wait for actionability checks on the matched element, unless force option is set. If the element is detached during the checks, the whole action is retried.
  3. Scroll the element into view if needed.
  4. Use page.mouse to click in the center of the element, or the specified position.
  5. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

Shortcut for page.mainFrame().click(selector[, options]).

page.close([options])

By default, page.close() does not run beforeunload handlers.

Note

if runBeforeUnload is passed as true, a beforeunload dialog might be summoned and should be handled manually via page's 'dialog' event.

page.content()

Gets the full HTML contents of the page, including the doctype.

page.context()

Get the browser context that the page belongs to.

page.coverage

Browser-specific Coverage implementation, only available for Chromium atm. See ChromiumCoverage for more details.

page.dblclick(selector[, options])

  • selector <string> A selector to search for element to double click. If there are multiple elements satisfying the selector, the first will be double clicked. See working with selectors for more details.
  • options <Object>
    • button <"left"|"right"|"middle"> Defaults to left.
    • delay <number> Time to wait between mousedown and mouseup in milliseconds. Defaults to 0.
    • position <Object> A point to double click relative to the top-left corner of element padding box. If not specified, double clicks to some visible point of the element.
    • modifiers <Array<"Alt"|"Control"|"Meta"|"Shift">> Modifier keys to press. Ensures that only these modifiers are pressed during the double click, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element matching selector is successfully double clicked.

This method double clicks an element matching selector by performing the following steps:

  1. Find an element match matching selector. If there is none, wait until a matching element is attached to the DOM.
  2. Wait for actionability checks on the matched element, unless force option is set. If the element is detached during the checks, the whole action is retried.
  3. Scroll the element into view if needed.
  4. Use page.mouse to double click in the center of the element, or the specified position.
  5. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set. Note that if the first click of the dblclick() triggers a navigation event, this method will reject.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

Note

page.dblclick() dispatches two click events and a single dblclick event.

Shortcut for page.mainFrame().dblclick(selector[, options]).

page.dispatchEvent(selector, type[, eventInit, options])

The snippet below dispatches the click event on the element. Regardless of the visibility state of the elment, click is dispatched. This is equivalend to calling element.click().

await page.dispatchEvent('button#submit', 'click');

Under the hood, it creates an instance of an event based on the given type, initializes it with eventInit properties and dispatches it on the element. Events are composed, cancelable and bubble by default.

Since eventInit is event-specific, please refer to the events documentation for the lists of initial properties:

You can also specify JSHandle as the property value if you want live objects to be passed into the event:

// Note you can only create DataTransfer in Chromium and Firefox
const dataTransfer = await page.evaluateHandle(() => new DataTransfer());
await page.dispatchEvent('#source', 'dragstart', { dataTransfer });

page.emulateMedia(options)

  • options <Object>
    • media <null|"screen"|"print"> Changes the CSS media type of the page. The only allowed values are 'screen', 'print' and null. Passing null disables CSS media emulation. Omitting media or passing undefined does not change the emulated value.
    • colorScheme <null|"light"|"dark"|"no-preference"> Emulates 'prefers-colors-scheme' media feature, supported values are 'light', 'dark', 'no-preference'. Passing null disables color scheme emulation. Omitting colorScheme or passing undefined does not change the emulated value.
  • returns: <Promise>
await page.evaluate(() => matchMedia('screen').matches);
// → true
await page.evaluate(() => matchMedia('print').matches);
// → false

await page.emulateMedia({ media: 'print' });
await page.evaluate(() => matchMedia('screen').matches);
// → false
await page.evaluate(() => matchMedia('print').matches);
// → true

await page.emulateMedia({});
await page.evaluate(() => matchMedia('screen').matches);
// → true
await page.evaluate(() => matchMedia('print').matches);
// → false

await page.emulateMedia({ colorScheme: 'dark' }] });
await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches);
// → true
await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches);
// → false
await page.evaluate(() => matchMedia('(prefers-color-scheme: no-preference)').matches);
// → false

page.evaluate(pageFunction[, arg])

If the function passed to the page.evaluate returns a Promise, then page.evaluate would wait for the promise to resolve and return its value.

If the function passed to the page.evaluate returns a non-Serializable value, then page.evaluate resolves to undefined. DevTools Protocol also supports transferring some additional values that are not serializable by JSON: -0, NaN, Infinity, -Infinity, and bigint literals.

Passing argument to pageFunction:

const result = await page.evaluate(([x, y]) => {
  return Promise.resolve(x * y);
}, [7, 8]);
console.log(result); // prints "56"

A string can also be passed in instead of a function:

console.log(await page.evaluate('1 + 2')); // prints "3"
const x = 10;
console.log(await page.evaluate(`1 + ${x}`)); // prints "11"

ElementHandle instances can be passed as an argument to the page.evaluate:

const bodyHandle = await page.$('body');
const html = await page.evaluate(([body, suffix]) => body.innerHTML + suffix, [bodyHandle, 'hello']);
await bodyHandle.dispose();

Shortcut for page.mainFrame().evaluate(pageFunction[, arg]).

page.evaluateHandle(pageFunction[, arg])

  • pageFunction <function|string> Function to be evaluated in the page context
  • arg <EvaluationArgument> Optional argument to pass to pageFunction
  • returns: <Promise<JSHandle>> Promise which resolves to the return value of pageFunction as in-page object (JSHandle)

The only difference between page.evaluate and page.evaluateHandle is that page.evaluateHandle returns in-page object (JSHandle).

If the function passed to the page.evaluateHandle returns a Promise, then page.evaluateHandle would wait for the promise to resolve and return its value.

A string can also be passed in instead of a function:

const aHandle = await page.evaluateHandle('document'); // Handle for the 'document'

JSHandle instances can be passed as an argument to the page.evaluateHandle:

const aHandle = await page.evaluateHandle(() => document.body);
const resultHandle = await page.evaluateHandle(body => body.innerHTML, aHandle);
console.log(await resultHandle.jsonValue());
await resultHandle.dispose();

page.exposeBinding(name, playwrightBinding)

  • name <string> Name of the function on the window object.
  • playwrightBinding <function> Callback function that will be called in the Playwright's context.
  • returns: <Promise>

The method adds a function called name on the window object of every frame in this page. When called, the function executes playwrightBinding in Node.js and returns a Promise which resolves to the return value of playwrightBinding. If the playwrightBinding returns a Promise, it will be awaited.

The first argument of the playwrightBinding function contains information about the caller: { browserContext: BrowserContext, page: Page, frame: Frame }.

See browserContext.exposeBinding(name, playwrightBinding) for the context-wide version.

Note

Functions installed via page.exposeBinding survive navigations.

An example of exposing page URL to all frames in a page:

const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.

(async () => {
  const browser = await webkit.launch({ headless: false });
  const context = await browser.newContext();
  const page = await context.newPage();
  await page.exposeBinding('pageURL', ({ page }) => page.url());
  await page.setContent(`
    <script>
      async function onClick() {
        document.querySelector('div').textContent = await window.pageURL();
      }
    </script>
    <button onclick="onClick()">Click me</button>
    <div></div>
  `);
  await page.click('button');
})();

page.exposeFunction(name, playwrightFunction)

  • name <string> Name of the function on the window object
  • playwrightFunction <function> Callback function which will be called in Playwright's context.
  • returns: <Promise>

The method adds a function called name on the window object of every frame in the page. When called, the function executes playwrightFunction in Node.js and returns a Promise which resolves to the return value of playwrightFunction.

If the playwrightFunction returns a Promise, it will be awaited.

See browserContext.exposeFunction(name, playwrightFunction) for context-wide exposed function.

Note

Functions installed via page.exposeFunction survive navigations.

An example of adding an md5 function to the page:

const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.
const crypto = require('crypto');

(async () => {
  const browser = await webkit.launch({ headless: false });
  const page = await browser.newPage();
  await page.exposeFunction('md5', text => crypto.createHash('md5').update(text).digest('hex'));
  await page.setContent(`
    <script>
      async function onClick() {
        document.querySelector('div').textContent = await window.md5('PLAYWRIGHT');
      }
    </script>
    <button onclick="onClick()">Click me</button>
    <div></div>
  `);
  await page.click('button');
})();

An example of adding a window.readfile function to the page:

const { chromium } = require('playwright');  // Or 'firefox' or 'webkit'.
const fs = require('fs');

(async () => {
  const browser = await chromium.launch();
  const page = await browser.newPage();
  page.on('console', msg => console.log(msg.text()));
  await page.exposeFunction('readfile', async filePath => {
    return new Promise((resolve, reject) => {
      fs.readFile(filePath, 'utf8', (err, text) => {
        if (err)
          reject(err);
        else
          resolve(text);
      });
    });
  });
  await page.evaluate(async () => {
    // use window.readfile to read contents of a file
    const content = await window.readfile('/etc/hosts');
    console.log(content);
  });
  await browser.close();
})();

page.fill(selector, value[, options])

  • selector <string> A selector to query page for. See working with selectors for more details.
  • value <string> Value to fill for the <input>, <textarea> or [contenteditable] element.
  • options <Object>
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise>

This method waits for an element matching selector, waits for actionability checks, focuses the element, fills it and triggers an input event after filling. If the element matching selector is not an <input>, <textarea> or [contenteditable] element, this method throws an error. Note that you can pass an empty string to clear the input field.

To send fine-grained keyboard events, use page.type.

Shortcut for page.mainFrame().fill()

page.focus(selector[, options])

  • selector <string> A selector of an element to focus. If there are multiple elements satisfying the selector, the first will be focused. See working with selectors for more details.
  • options <Object>
  • returns: <Promise> Promise which resolves when the element matching selector is successfully focused. The promise will be rejected if there is no element matching selector.

This method fetches an element with selector and focuses it. If there's no element matching selector, the method waits until a matching element appears in the DOM.

Shortcut for page.mainFrame().focus(selector).

page.frame(options)

  • options <string|Object> Frame name or other frame lookup options.
    • name <string> frame name specified in the iframe's name attribute
    • url <string|RegExp|Function> A glob pattern, regex pattern or predicate receiving frame's url as a URL object.
  • returns: <null|Frame> frame matching the criteria. Returns null if no frame matches.
const frame = page.frame('frame-name');

const frame = page.frame({ url: /.*domain.*/ });

Returns frame matching the specified criteria. Either name or url must be specified.

page.frames()

  • returns: <Array<Frame>> An array of all frames attached to the page.

page.getAttribute(selector, name[, options])

Returns element attribute value.

page.goBack([options])

  • options <Object> Navigation parameters which might have the following properties:
  • returns: <Promise<null|Response>> Promise which resolves to the main resource response. In case of multiple redirects, the navigation will resolve with the response of the last redirect. If can not go back, resolves to null.

Navigate to the previous page in history.

page.goForward([options])

  • options <Object> Navigation parameters which might have the following properties:
  • returns: <Promise<null|Response>> Promise which resolves to the main resource response. In case of multiple redirects, the navigation will resolve with the response of the last redirect. If can not go forward, resolves to null.

Navigate to the next page in history.

page.goto(url[, options])

  • url <string> URL to navigate page to. The url should include scheme, e.g. https://.
  • options <Object> Navigation parameters which might have the following properties:
  • returns: <Promise<null|Response>> Promise which resolves to the main resource response. In case of multiple redirects, the navigation will resolve with the response of the last redirect.

page.goto will throw an error if:

  • there's an SSL error (e.g. in case of self-signed certificates).
  • target URL is invalid.
  • the timeout is exceeded during navigation.
  • the remote server does not respond or is unreachable.
  • the main resource failed to load.

page.goto will not throw an error when any valid HTTP status code is returned by the remote server, including 404 "Not Found" and 500 "Internal Server Error". The status code for such responses can be retrieved by calling response.status().

Note

page.goto either throws an error or returns a main resource response. The only exceptions are navigation to about:blank or navigation to the same URL with a different hash, which would succeed and return null.

Note

Headless mode doesn't support navigation to a PDF document. See the upstream issue.

Shortcut for page.mainFrame().goto(url[, options])

page.hover(selector[, options])

  • selector <string> A selector to search for element to hover. If there are multiple elements satisfying the selector, the first will be hovered. See working with selectors for more details.
  • options <Object>
    • position <Object> A point to hover relative to the top-left corner of element padding box. If not specified, hovers over some visible point of the element.
    • modifiers <Array<"Alt"|"Control"|"Meta"|"Shift">> Modifier keys to press. Ensures that only these modifiers are pressed during the hover, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element matching selector is successfully hovered.

This method hovers over an element matching selector by performing the following steps:

  1. Find an element match matching selector. If there is none, wait until a matching element is attached to the DOM.
  2. Wait for actionability checks on the matched element, unless force option is set. If the element is detached during the checks, the whole action is retried.
  3. Scroll the element into view if needed.
  4. Use page.mouse to hover over the center of the element, or the specified position.
  5. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

Shortcut for page.mainFrame().hover(selector[, options]).

page.innerHTML(selector[, options])

Resolves to the element.innerHTML.

page.innerText(selector[, options])

Resolves to the element.innerText.

page.isClosed()

Indicates that the page has been closed.

page.keyboard

page.mainFrame()

  • returns: <Frame> The page's main frame.

Page is guaranteed to have a main frame which persists during navigations.

page.mouse

page.opener()

  • returns: <Promise<null|Page>> Promise which resolves to the opener for popup pages and null for others. If the opener has been closed already the promise may resolve to null.

page.pdf([options])

  • options <Object> Options object which might have the following properties:
    • path <string> The file path to save the PDF to. If path is a relative path, then it is resolved relative to current working directory. If no path is provided, the PDF won't be saved to the disk.
    • scale <number> Scale of the webpage rendering. Defaults to 1. Scale amount must be between 0.1 and 2.
    • displayHeaderFooter <boolean> Display header and footer. Defaults to false.
    • headerTemplate <string> HTML template for the print header. Should be valid HTML markup with following classes used to inject printing values into them:
      • 'date' formatted print date
      • 'title' document title
      • 'url' document location
      • 'pageNumber' current page number
      • 'totalPages' total pages in the document
    • footerTemplate <string> HTML template for the print footer. Should use the same format as the headerTemplate.
    • printBackground <boolean> Print background graphics. Defaults to false.
    • landscape <boolean> Paper orientation. Defaults to false.
    • pageRanges <string> Paper ranges to print, e.g., '1-5, 8, 11-13'. Defaults to the empty string, which means print all pages.
    • format <string> Paper format. If set, takes priority over width or height options. Defaults to 'Letter'.
    • width <string|number> Paper width, accepts values labeled with units.
    • height <string|number> Paper height, accepts values labeled with units.
    • margin <Object> Paper margins, defaults to none.
      • top <string|number> Top margin, accepts values labeled with units. Defaults to 0.
      • right <string|number> Right margin, accepts values labeled with units. Defaults to 0.
      • bottom <string|number> Bottom margin, accepts values labeled with units. Defaults to 0.
      • left <string|number> Left margin, accepts values labeled with units. Defaults to 0.
    • preferCSSPageSize <boolean> Give any CSS @page size declared in the page priority over what is declared in width and height or format options. Defaults to false, which will scale the content to fit the paper size.
  • returns: <Promise<Buffer>> Promise which resolves with PDF buffer.

Note

Generating a pdf is currently only supported in Chromium headless.

page.pdf() generates a pdf of the page with print css media. To generate a pdf with screen media, call page.emulateMedia({ media: 'screen' }) before calling page.pdf():

Note

By default, page.pdf() generates a pdf with modified colors for printing. Use the -webkit-print-color-adjust property to force rendering of exact colors.

// Generates a PDF with 'screen' media type.
await page.emulateMedia({media: 'screen'});
await page.pdf({path: 'page.pdf'});

The width, height, and margin options accept values labeled with units. Unlabeled values are treated as pixels.

A few examples:

  • page.pdf({width: 100}) - prints with width set to 100 pixels
  • page.pdf({width: '100px'}) - prints with width set to 100 pixels
  • page.pdf({width: '10cm'}) - prints with width set to 10 centimeters.

All possible units are:

  • px - pixel
  • in - inch
  • cm - centimeter
  • mm - millimeter

The format options are:

  • Letter: 8.5in x 11in
  • Legal: 8.5in x 14in
  • Tabloid: 11in x 17in
  • Ledger: 17in x 11in
  • A0: 33.1in x 46.8in
  • A1: 23.4in x 33.1in
  • A2: 16.54in x 23.4in
  • A3: 11.7in x 16.54in
  • A4: 8.27in x 11.7in
  • A5: 5.83in x 8.27in
  • A6: 4.13in x 5.83in

Note

headerTemplate and footerTemplate markup have the following limitations:

  1. Script tags inside templates are not evaluated.
  2. Page styles are not visible inside templates.

page.press(selector, key[, options])

  • selector <string> A selector of an element to type into. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
  • key <string> Name of the key to press or a character to generate, such as ArrowLeft or a.
  • options <Object>
    • delay <number> Time to wait between keydown and keyup in milliseconds. Defaults to 0.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise>

Focuses the element, and then uses keyboard.down and keyboard.up.

key can specify the intended keyboardEvent.key value or a single character to generate the text for. A superset of the key values can be found here. Examples of the keys are:

F1 - F12, Digit0- Digit9, KeyA- KeyZ, Backquote, Minus, Equal, Backslash, Backspace, Tab, Delete, Escape, ArrowDown, End, Enter, Home, Insert, PageDown, PageUp, ArrowRight, ArrowUp, etc.

Following modification shortcuts are also suported: Shift, Control, Alt, Meta, ShiftLeft.

Holding down Shift will type the text that corresponds to the key in the upper case.

If key is a single character, it is case-sensitive, so the values a and A will generate different respective texts.

Shortcuts such as key: "Control+o" or key: "Control+Shift+T" are supported as well. When speficied with the modifier, modifier is pressed and being held while the subsequent key is being pressed.

const page = await browser.newPage();
await page.goto('https://keycode.info');
await page.press('body', 'A');
await page.screenshot({ path: 'A.png' });
await page.press('body', 'ArrowLeft');
await page.screenshot({ path: 'ArrowLeft.png' });
await page.press('body', 'Shift+O');
await page.screenshot({ path: 'O.png' });
await browser.close();

page.reload([options])

  • options <Object> Navigation parameters which might have the following properties:
  • returns: <Promise<null|Response>> Promise which resolves to the main resource response. In case of multiple redirects, the navigation will resolve with the response of the last redirect.

page.route(url, handler)

Routing provides the capability to modify network requests that are made by a page.

Once routing is enabled, every request matching the url pattern will stall unless it's continued, fulfilled or aborted.

An example of a naïve handler that aborts all image requests:

const page = await browser.newPage();
await page.route('**/*.{png,jpg,jpeg}', route => route.abort());
await page.goto('https://example.com');
await browser.close();

or the same snippet using a regex pattern instead:

const page = await browser.newPage();
await page.route(/(\.png$)|(\.jpg$)/, route => route.abort());
await page.goto('https://example.com');
await browser.close();

Page routes take precedence over browser context routes (set up with browserContext.route(url, handler)) when request matches both handlers.

Note

Enabling routing disables http cache.

page.screenshot([options])

  • options <Object> Options object which might have the following properties:
    • path <string> The file path to save the image to. The screenshot type will be inferred from file extension. If path is a relative path, then it is resolved relative to current working directory. If no path is provided, the image won't be saved to the disk.
    • type <"png"|"jpeg"> Specify screenshot type, defaults to png.
    • quality <number> The quality of the image, between 0-100. Not applicable to png images.
    • fullPage <boolean> When true, takes a screenshot of the full scrollable page, instead of the currently visibvle viewport. Defaults to false.
    • clip <Object> An object which specifies clipping of the resulting image. Should have the following fields:
      • x <number> x-coordinate of top-left corner of clip area
      • y <number> y-coordinate of top-left corner of clip area
      • width <number> width of clipping area
      • height <number> height of clipping area
    • omitBackground <boolean> Hides default white background and allows capturing screenshots with transparency. Not applicable to jpeg images. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise<Buffer>> Promise which resolves to buffer with the captured screenshot.

Note

Screenshots take at least 1/6 second on Chromium OS X and Chromium Windows. See https://crbug.com/741689 for discussion.

page.selectOption(selector, values[, options])

  • selector <string> A selector to query page for. See working with selectors for more details.
  • values <null|string|ElementHandle|Array<string>|Object|Array<ElementHandle>|Array<Object>> Options to select. If the <select> has the multiple attribute, all matching options are selected, otherwise only the first option matching one of the passed options is selected. String values are equivalent to {value:'string'}. Option is considered matching if all specified properties match.
    • value <string> Matches by option.value.
    • label <string> Matches by option.label.
    • index <number> Matches by the index.
  • options <Object>
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise<Array<string>>> An array of option values that have been successfully selected.

Triggers a change and input event once all the provided options have been selected. If there's no <select> element matching selector, the method throws an error.

// single selection matching the value
page.selectOption('select#colors', 'blue');

// single selection matching both the value and the label
page.selectOption('select#colors', { label: 'Blue' });

// multiple selection
page.selectOption('select#colors', ['red', 'green', 'blue']);

Shortcut for page.mainFrame().selectOption()

page.setContent(html[, options])

  • html <string> HTML markup to assign to the page.
  • options <Object> Parameters which might have the following properties:
    • timeout <number> Maximum time in milliseconds for resources to load, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultNavigationTimeout(timeout), browserContext.setDefaultTimeout(timeout), page.setDefaultNavigationTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
    • waitUntil <"load"|"domcontentloaded"|"networkidle"> When to consider setting markup succeeded, defaults to load. Given an array of event strings, setting content is considered to be successful after all events have been fired. Events can be either:
      • 'load' - consider setting content to be finished when the load event is fired.
      • 'domcontentloaded' - consider setting content to be finished when the DOMContentLoaded event is fired.
      • 'networkidle' - consider setting content to be finished when there are no network connections for at least 500 ms.
  • returns: <Promise>

page.setDefaultNavigationTimeout(timeout)

  • timeout <number> Maximum navigation time in milliseconds

This setting will change the default maximum navigation time for the following methods and related shortcuts:

Note

page.setDefaultNavigationTimeout takes priority over page.setDefaultTimeout, browserContext.setDefaultTimeout and browserContext.setDefaultNavigationTimeout.

page.setDefaultTimeout(timeout)

  • timeout <number> Maximum time in milliseconds

This setting will change the default maximum time for all the methods accepting timeout option.

Note

page.setDefaultNavigationTimeout takes priority over page.setDefaultTimeout.

page.setExtraHTTPHeaders(headers)

  • headers <Object<string, string>> An object containing additional HTTP headers to be sent with every request. All header values must be strings.
  • returns: <Promise>

The extra HTTP headers will be sent with every request the page initiates.

Note

page.setExtraHTTPHeaders does not guarantee the order of headers in the outgoing requests.

page.setInputFiles(selector, files[, options])

This method expects selector to point to an input element.

Sets the value of the file input to these file paths or files. If some of the filePaths are relative paths, then they are resolved relative to the current working directory. For empty array, clears the selected files.

page.setViewportSize(viewportSize)

  • viewportSize <Object>
    • width <number> page width in pixels. required
    • height <number> page height in pixels. required
  • returns: <Promise>

In the case of multiple pages in a single browser, each page can have its own viewport size. However, browser.newContext([options]) allows to set viewport size (and more) for all pages in the context at once.

page.setViewportSize will resize the page. A lot of websites don't expect phones to change size, so you should set the viewport size before navigating to the page.

const page = await browser.newPage();
await page.setViewportSize({
  width: 640,
  height: 480,
});
await page.goto('https://example.com');

page.textContent(selector[, options])

Resolves to the element.textContent.

page.title()

Shortcut for page.mainFrame().title().

page.type(selector, text[, options])

  • selector <string> A selector of an element to type into. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
  • text <string> A text to type into a focused element.
  • options <Object>
    • delay <number> Time to wait between key presses in milliseconds. Defaults to 0.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise>

Sends a keydown, keypress/input, and keyup event for each character in the text. page.type can be used to send fine-grained keyboard events. To fill values in form fields, use page.fill.

To press a special key, like Control or ArrowDown, use keyboard.press.

await page.type('#mytextarea', 'Hello'); // Types instantly
await page.type('#mytextarea', 'World', {delay: 100}); // Types slower, like a user

Shortcut for page.mainFrame().type(selector, text[, options]).

page.uncheck(selector, [options])

  • selector <string> A selector to search for uncheckbox to check. If there are multiple elements satisfying the selector, the first will be checked. See working with selectors for more details.
  • options <Object>
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element matching selector is successfully unchecked.

This method unchecks an element matching selector by performing the following steps:

  1. Find an element match matching selector. If there is none, wait until a matching element is attached to the DOM.
  2. Ensure that matched element is a checkbox or a radio input. If not, this method rejects. If the element is already unchecked, this method returns immediately.
  3. Wait for actionability checks on the matched element, unless force option is set. If the element is detached during the checks, the whole action is retried.
  4. Scroll the element into view if needed.
  5. Use page.mouse to click in the center of the element.
  6. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set.
  7. Ensure that the element is now unchecked. If not, this method rejects.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

Shortcut for page.mainFrame().uncheck(selector[, options]).

page.unroute(url[, handler])

Removes a route created with page.route(url, handler). When handler is not specified, removes all routes for the url.

page.url()

This is a shortcut for page.mainFrame().url()

page.viewportSize()

page.waitForEvent(event[, optionsOrPredicate])

  • event <string> Event name, same one would pass into page.on(event).
  • optionsOrPredicate <Function|Object> Either a predicate that receives an event or an options object.
  • returns: <Promise<Object>> Promise which resolves to the event data value.

Waits for event to fire and passes its value into the predicate function. Resolves when the predicate returns truthy value. Will throw an error if the page is closed before the event is fired.

page.waitForFunction(pageFunction[, arg, options])

  • pageFunction <function|string> Function to be evaluated in browser context
  • arg <EvaluationArgument> Optional argument to pass to pageFunction
  • options <Object> Optional waiting parameters
    • polling <number|"raf"> If polling is 'raf', then pageFunction is constantly executed in requestAnimationFrame callback. If polling is a number, then it is treated as an interval in milliseconds at which the function would be executed. Defaults to raf.
    • timeout <number> maximum time to wait for in milliseconds. Defaults to 30000 (30 seconds). Pass 0 to disable timeout. The default value can be changed by using the page.setDefaultTimeout(timeout) method.
  • returns: <Promise<JSHandle>> Promise which resolves when the pageFunction returns a truthy value. It resolves to a JSHandle of the truthy value.

The waitForFunction can be used to observe viewport size change:

const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.

(async () => {
  const browser = await webkit.launch();
  const page = await browser.newPage();
  const watchDog = page.waitForFunction('window.innerWidth < 100');
  await page.setViewportSize({width: 50, height: 50});
  await watchDog;
  await browser.close();
})();

To pass an argument from Node.js to the predicate of page.waitForFunction function:

const selector = '.foo';
await page.waitForFunction(selector => !!document.querySelector(selector), selector);

Shortcut for page.mainFrame().waitForFunction(pageFunction[, arg, options]).

page.waitForLoadState([state[, options]])

This resolves when the page reaches a required load state, load by default. The navigation must have been committed when this method is called. If current document has already reached the required state, resolves immediately.

await page.click('button'); // Click triggers navigation.
await page.waitForLoadState(); // The promise resolves after 'load' event.

const [popup] = await Promise.all([
  page.waitForEvent('popup'),
  page.click('button'), // Click triggers a popup.
])
await popup.waitForLoadState('domcontentloaded'); // The promise resolves after 'domcontentloaded' event.
console.log(await popup.title()); // Popup is ready to use.

Shortcut for page.mainFrame().waitForLoadState([options]).

page.waitForNavigation([options])

  • options <Object> Navigation parameters which might have the following properties:
  • returns: <Promise<null|Response>> Promise which resolves to the main resource response. In case of multiple redirects, the navigation will resolve with the response of the last redirect. In case of navigation to a different anchor or navigation due to History API usage, the navigation will resolve with null.

This resolves when the page navigates to a new URL or reloads. It is useful for when you run code which will indirectly cause the page to navigate. e.g. The click target has an onclick handler that triggers navigation from a setTimeout. Consider this example:

const [response] = await Promise.all([
  page.waitForNavigation(), // The promise resolves after navigation has finished
  page.click('a.delayed-navigation'), // Clicking the link will indirectly cause a navigation
]);

NOTE Usage of the History API to change the URL is considered a navigation.

Shortcut for page.mainFrame().waitForNavigation(options).

page.waitForRequest(urlOrPredicate[, options])

const firstRequest = await page.waitForRequest('http://example.com/resource');
const finalRequest = await page.waitForRequest(request => request.url() === 'http://example.com' && request.method() === 'GET');
return firstRequest.url();

await page.waitForRequest(request => request.url().searchParams.get('foo') === 'bar' && request.url().searchParams.get('foo2') === 'bar2');

page.waitForResponse(urlOrPredicate[, options])

const firstResponse = await page.waitForResponse('https://example.com/resource');
const finalResponse = await page.waitForResponse(response => response.url() === 'https://example.com' && response.status() === 200);
return finalResponse.ok();

page.waitForSelector(selector[, options])

  • selector <string> A selector of an element to wait for. See working with selectors for more details.
  • options <Object>
    • state <"attached"|"detached"|"visible"|"hidden"> Defaults to 'visible'. Can be either:
      • 'attached' - wait for element to be present in DOM.
      • 'detached' - wait for element to not be present in DOM.
      • 'visible' - wait for element to have non-empty bounding box and no visibility:hidden. Note that element without any content or with display:none has an empty bounding box and is not considered visible.
      • 'hidden' - wait for element to be either detached from DOM, or have an empty bounding box or visibility:hidden. This is opposite to the 'visible' option.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise<null|ElementHandle>> Promise which resolves when element specified by selector satisfies state option. Resolves to null if waiting for hidden or detached.

Wait for the selector to satisfy state option (either appear/disappear from dom, or become visible/hidden). If at the moment of calling the method selector already satisfies the condition, the method will return immediately. If the selector doesn't satisfy the condition for the timeout milliseconds, the function will throw.

This method works across navigations:

const { chromium } = require('playwright');  // Or 'firefox' or 'webkit'.

(async () => {
  const browser = await chromium.launch();
  const page = await browser.newPage();
  let currentURL;
  page
    .waitForSelector('img')
    .then(() => console.log('First URL with image: ' + currentURL));
  for (currentURL of ['https://example.com', 'https://google.com', 'https://bbc.com']) {
    await page.goto(currentURL);
  }
  await browser.close();
})();

Shortcut for page.mainFrame().waitForSelector(selector[, options]).

page.waitForTimeout(timeout)

Returns a promise that resolves after the timeout.

Note that page.waitForTimeout() should only be used for debugging. Tests using the timer in production are going to be flaky. Use signals such as network events, selectors becoming visible and others instead.

// wait for 1 second
await page.waitForTimeout(1000);

Shortcut for page.mainFrame().waitForTimeout(timeout).

page.workers()

Note

This does not contain ServiceWorkers

class: Frame

At every point of time, page exposes its current frame tree via the page.mainFrame() and frame.childFrames() methods.

Frame object's lifecycle is controlled by three events, dispatched on the page object:

  • 'frameattached' - fired when the frame gets attached to the page. A Frame can be attached to the page only once.
  • 'framenavigated' - fired when the frame commits navigation to a different URL.
  • 'framedetached' - fired when the frame gets detached from the page. A Frame can be detached from the page only once.

An example of dumping frame tree:

const { firefox } = require('playwright');  // Or 'chromium' or 'webkit'.

(async () => {
  const browser = await firefox.launch();
  const page = await browser.newPage();
  await page.goto('https://www.google.com/chrome/browser/canary.html');
  dumpFrameTree(page.mainFrame(), '');
  await browser.close();

  function dumpFrameTree(frame, indent) {
    console.log(indent + frame.url());
    for (const child of frame.childFrames()) {
      dumpFrameTree(child, indent + '  ');
    }
  }
})();

An example of getting text from an iframe element:

const frame = page.frames().find(frame => frame.name() === 'myframe');
const text = await frame.$eval('.selector', element => element.textContent);
console.log(text);

frame.$(selector)

The method finds an element matching the specified selector within the frame. See Working with selectors for more details. If no elements match the selector, the return value resolves to null.

frame.$$(selector)

The method finds all elements matching the specified selector within the frame. See Working with selectors for more details. If no elements match the selector, the return value resolves to [].

frame.$eval(selector, pageFunction[, arg])

The method finds an element matching the specified selector within the frame and passes it as a first argument to pageFunction. See Working with selectors for more details. If no elements match the selector, the method throws an error.

If pageFunction returns a Promise, then frame.$eval would wait for the promise to resolve and return its value.

Examples:

const searchValue = await frame.$eval('#search', el => el.value);
const preloadHref = await frame.$eval('link[rel=preload]', el => el.href);
const html = await frame.$eval('.main-container', (e, suffix) => e.outerHTML + suffix, 'hello');

frame.$$eval(selector, pageFunction[, arg])

The method finds all elements matching the specified selector within the frame and passes an array of matched elements as a first argument to pageFunction. See Working with selectors for more details.

If pageFunction returns a Promise, then frame.$$eval would wait for the promise to resolve and return its value.

Examples:

const divsCounts = await frame.$$eval('div', (divs, min) => divs.length >= min, 10);

frame.addScriptTag(options)

  • options <Object>
    • url <string> URL of a script to be added.
    • path <string> Path to the JavaScript file to be injected into frame. If path is a relative path, then it is resolved relative to current working directory.
    • content <string> Raw JavaScript content to be injected into frame.
    • type <string> Script type. Use 'module' in order to load a Javascript ES6 module. See script for more details.
  • returns: <Promise<ElementHandle>> which resolves to the added tag when the script's onload fires or when the script content was injected into frame.

Adds a <script> tag into the page with the desired url or content.

frame.addStyleTag(options)

  • options <Object>
    • url <string> URL of the <link> tag.
    • path <string> Path to the CSS file to be injected into frame. If path is a relative path, then it is resolved relative to current working directory.
    • content <string> Raw CSS content to be injected into frame.
  • returns: <Promise<ElementHandle>> which resolves to the added tag when the stylesheet's onload fires or when the CSS content was injected into frame.

Adds a <link rel="stylesheet"> tag into the page with the desired url or a <style type="text/css"> tag with the content.

frame.check(selector, [options])

  • selector <string> A selector to search for checkbox to check. If there are multiple elements satisfying the selector, the first will be checked. See working with selectors for more details.
  • options <Object>
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element matching selector is successfully checked.

This method checks an element matching selector by performing the following steps:

  1. Find an element match matching selector. If there is none, wait until a matching element is attached to the DOM.
  2. Ensure that matched element is a checkbox or a radio input. If not, this method rejects. If the element is already checked, this method returns immediately.
  3. Wait for actionability checks on the matched element, unless force option is set. If the element is detached during the checks, the whole action is retried.
  4. Scroll the element into view if needed.
  5. Use page.mouse to click in the center of the element.
  6. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set.
  7. Ensure that the element is now checked. If not, this method rejects.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

frame.childFrames()

frame.click(selector[, options])

  • selector <string> A selector to search for element to click. If there are multiple elements satisfying the selector, the first will be clicked. See working with selectors for more details.
  • options <Object>
    • button <"left"|"right"|"middle"> Defaults to left.
    • clickCount <number> defaults to 1. See UIEvent.detail.
    • delay <number> Time to wait between mousedown and mouseup in milliseconds. Defaults to 0.
    • position <Object> A point to click relative to the top-left corner of element padding box. If not specified, clicks to some visible point of the element.
    • modifiers <Array<"Alt"|"Control"|"Meta"|"Shift">> Modifier keys to press. Ensures that only these modifiers are pressed during the click, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element matching selector is successfully clicked.

This method clicks an element matching selector by performing the following steps:

  1. Find an element match matching selector. If there is none, wait until a matching element is attached to the DOM.
  2. Wait for actionability checks on the matched element, unless force option is set. If the element is detached during the checks, the whole action is retried.
  3. Scroll the element into view if needed.
  4. Use page.mouse to click in the center of the element, or the specified position.
  5. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

frame.content()

Gets the full HTML contents of the frame, including the doctype.

frame.dblclick(selector[, options])

  • selector <string> A selector to search for element to double click. If there are multiple elements satisfying the selector, the first will be double clicked. See working with selectors for more details.
  • options <Object>
    • button <"left"|"right"|"middle"> Defaults to left.
    • delay <number> Time to wait between mousedown and mouseup in milliseconds. Defaults to 0.
    • position <Object> A point to double click relative to the top-left corner of element padding box. If not specified, double clicks to some visible point of the element.
    • modifiers <Array<"Alt"|"Control"|"Meta"|"Shift">> Modifier keys to press. Ensures that only these modifiers are pressed during the double click, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element matching selector is successfully double clicked.

This method double clicks an element matching selector by performing the following steps:

  1. Find an element match matching selector. If there is none, wait until a matching element is attached to the DOM.
  2. Wait for actionability checks on the matched element, unless force option is set. If the element is detached during the checks, the whole action is retried.
  3. Scroll the element into view if needed.
  4. Use page.mouse to double click in the center of the element, or the specified position.
  5. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set. Note that if the first click of the dblclick() triggers a navigation event, this method will reject.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

Note

frame.dblclick() dispatches two click events and a single dblclick event.

frame.dispatchEvent(selector, type[, eventInit, options])

The snippet below dispatches the click event on the element. Regardless of the visibility state of the elment, click is dispatched. This is equivalend to calling element.click().

await frame.dispatchEvent('button#submit', 'click');

Under the hood, it creates an instance of an event based on the given type, initializes it with eventInit properties and dispatches it on the element. Events are composed, cancelable and bubble by default.

Since eventInit is event-specific, please refer to the events documentation for the lists of initial properties:

You can also specify JSHandle as the property value if you want live objects to be passed into the event:

// Note you can only create DataTransfer in Chromium and Firefox
const dataTransfer = await frame.evaluateHandle(() => new DataTransfer());
await frame.dispatchEvent('#source', 'dragstart', { dataTransfer });

frame.evaluate(pageFunction[, arg])

If the function passed to the frame.evaluate returns a Promise, then frame.evaluate would wait for the promise to resolve and return its value.

If the function passed to the frame.evaluate returns a non-Serializable value, then frame.evaluate resolves to undefined. DevTools Protocol also supports transferring some additional values that are not serializable by JSON: -0, NaN, Infinity, -Infinity, and bigint literals.

const result = await frame.evaluate(([x, y]) => {
  return Promise.resolve(x * y);
}, [7, 8]);
console.log(result); // prints "56"

A string can also be passed in instead of a function.

console.log(await frame.evaluate('1 + 2')); // prints "3"

ElementHandle instances can be passed as an argument to the frame.evaluate:

const bodyHandle = await frame.$('body');
const html = await frame.evaluate(([body, suffix]) => body.innerHTML + suffix, [bodyHandle, 'hello']);
await bodyHandle.dispose();

frame.evaluateHandle(pageFunction[, arg])

  • pageFunction <function|string> Function to be evaluated in the page context
  • arg <EvaluationArgument> Optional argument to pass to pageFunction
  • returns: <Promise<JSHandle>> Promise which resolves to the return value of pageFunction as in-page object (JSHandle)

The only difference between frame.evaluate and frame.evaluateHandle is that frame.evaluateHandle returns in-page object (JSHandle).

If the function, passed to the frame.evaluateHandle, returns a Promise, then frame.evaluateHandle would wait for the promise to resolve and return its value.

const aWindowHandle = await frame.evaluateHandle(() => Promise.resolve(window));
aWindowHandle; // Handle for the window object.

A string can also be passed in instead of a function.

const aHandle = await frame.evaluateHandle('document'); // Handle for the 'document'.

JSHandle instances can be passed as an argument to the frame.evaluateHandle:

const aHandle = await frame.evaluateHandle(() => document.body);
const resultHandle = await frame.evaluateHandle(([body, suffix]) => body.innerHTML + suffix, [aHandle, 'hello']);
console.log(await resultHandle.jsonValue());
await resultHandle.dispose();

frame.fill(selector, value[, options])

  • selector <string> A selector to query page for. See working with selectors for more details.
  • value <string> Value to fill for the <input>, <textarea> or [contenteditable] element.
  • options <Object>
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise>

This method waits for an element matching selector, waits for actionability checks, focuses the element, fills it and triggers an input event after filling. If the element matching selector is not an <input>, <textarea> or [contenteditable] element, this method throws an error. Note that you can pass an empty string to clear the input field.

To send fine-grained keyboard events, use frame.type.

frame.focus(selector[, options])

  • selector <string> A selector of an element to focus. If there are multiple elements satisfying the selector, the first will be focused. See working with selectors for more details.
  • options <Object>
  • returns: <Promise> Promise which resolves when the element matching selector is successfully focused. The promise will be rejected if there is no element matching selector.

This method fetches an element with selector and focuses it. If there's no element matching selector, the method waits until a matching element appears in the DOM.

frame.frameElement()

  • returns: <Promise<ElementHandle>> Promise that resolves with a frame or iframe element handle which corresponds to this frame.

This is an inverse of elementHandle.contentFrame(). Note that returned handle actually belongs to the parent frame.

This method throws an error if the frame has been detached before frameElement() returns.

const frameElement = await frame.frameElement();
const contentFrame = await frameElement.contentFrame();
console.log(frame === contentFrame);  // -> true

frame.getAttribute(selector, name[, options])

Returns element attribute value.

frame.goto(url[, options])

  • url <string> URL to navigate frame to. The url should include scheme, e.g. https://.
  • options <Object> Navigation parameters which might have the following properties:
  • returns: <Promise<null|Response>> Promise which resolves to the main resource response. In case of multiple redirects, the navigation will resolve with the response of the last redirect.

frame.goto will throw an error if:

  • there's an SSL error (e.g. in case of self-signed certificates).
  • target URL is invalid.
  • the timeout is exceeded during navigation.
  • the remote server does not respond or is unreachable.
  • the main resource failed to load.

frame.goto will not throw an error when any valid HTTP status code is returned by the remote server, including 404 "Not Found" and 500 "Internal Server Error". The status code for such responses can be retrieved by calling response.status().

Note

frame.goto either throws an error or returns a main resource response. The only exceptions are navigation to about:blank or navigation to the same URL with a different hash, which would succeed and return null.

Note

Headless mode doesn't support navigation to a PDF document. See the upstream issue.

frame.hover(selector[, options])

  • selector <string> A selector to search for element to hover. If there are multiple elements satisfying the selector, the first will be hovered. See working with selectors for more details.
  • options <Object>
    • position <Object> A point to hover relative to the top-left corner of element padding box. If not specified, hovers over some visible point of the element.
    • modifiers <Array<"Alt"|"Control"|"Meta"|"Shift">> Modifier keys to press. Ensures that only these modifiers are pressed during the hover, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element matching selector is successfully hovered.

This method hovers over an element matching selector by performing the following steps:

  1. Find an element match matching selector. If there is none, wait until a matching element is attached to the DOM.
  2. Wait for actionability checks on the matched element, unless force option is set. If the element is detached during the checks, the whole action is retried.
  3. Scroll the element into view if needed.
  4. Use page.mouse to hover over the center of the element, or the specified position.
  5. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

frame.innerHTML(selector[, options])

Resolves to the element.innerHTML.

frame.innerText(selector[, options])

Resolves to the element.innerText.

frame.isDetached()

Returns true if the frame has been detached, or false otherwise.

frame.name()

Returns frame's name attribute as specified in the tag.

If the name is empty, returns the id attribute instead.

Note

This value is calculated once when the frame is created, and will not update if the attribute is changed later.

frame.page()

Returns the page containing this frame.

frame.parentFrame()

  • returns: <null|Frame> Parent frame, if any. Detached frames and main frames return null.

frame.press(selector, key[, options])

  • selector <string> A selector of an element to type into. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
  • key <string> Name of the key to press or a character to generate, such as ArrowLeft or a.
  • options <Object>
    • delay <number> Time to wait between keydown and keyup in milliseconds. Defaults to 0.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise>

key can specify the intended keyboardEvent.key value or a single character to generate the text for. A superset of the key values can be found here. Examples of the keys are:

F1 - F12, Digit0- Digit9, KeyA- KeyZ, Backquote, Minus, Equal, Backslash, Backspace, Tab, Delete, Escape, ArrowDown, End, Enter, Home, Insert, PageDown, PageUp, ArrowRight, ArrowUp, etc.

Following modification shortcuts are also suported: Shift, Control, Alt, Meta, ShiftLeft.

Holding down Shift will type the text that corresponds to the key in the upper case.

If key is a single character, it is case-sensitive, so the values a and A will generate different respective texts.

Shortcuts such as key: "Control+o" or key: "Control+Shift+T" are supported as well. When speficied with the modifier, modifier is pressed and being held while the subsequent key is being pressed.

frame.selectOption(selector, values[, options])

  • selector <string> A selector to query frame for. See working with selectors for more details.
  • values <null|string|ElementHandle|Array<string>|Object|Array<ElementHandle>|Array<Object>> Options to select. If the <select> has the multiple attribute, all matching options are selected, otherwise only the first option matching one of the passed options is selected. String values are equivalent to {value:'string'}. Option is considered matching if all specified properties match.
    • value <string> Matches by option.value.
    • label <string> Matches by option.label.
    • index <number> Matches by the index.
  • options <Object>
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise<Array<string>>> An array of option values that have been successfully selected.

Triggers a change and input event once all the provided options have been selected. If there's no <select> element matching selector, the method throws an error.

// single selection matching the value
frame.selectOption('select#colors', 'blue');

// single selection matching both the value and the label
frame.selectOption('select#colors', { label: 'Blue' });

// multiple selection
frame.selectOption('select#colors', 'red', 'green', 'blue');

frame.setContent(html[, options])

frame.setInputFiles(selector, files[, options])

This method expects selector to point to an input element.

Sets the value of the file input to these file paths or files. If some of the filePaths are relative paths, then they are resolved relative to the current working directory. For empty array, clears the selected files.

frame.textContent(selector[, options])

Resolves to the element.textContent.

frame.title()

frame.type(selector, text[, options])

  • selector <string> A selector of an element to type into. If there are multiple elements satisfying the selector, the first will be used. See working with selectors for more details.
  • text <string> A text to type into a focused element.
  • options <Object>
    • delay <number> Time to wait between key presses in milliseconds. Defaults to 0.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise>

Sends a keydown, keypress/input, and keyup event for each character in the text. frame.type can be used to send fine-grained keyboard events. To fill values in form fields, use frame.fill.

To press a special key, like Control or ArrowDown, use keyboard.press.

await frame.type('#mytextarea', 'Hello'); // Types instantly
await frame.type('#mytextarea', 'World', {delay: 100}); // Types slower, like a user

frame.uncheck(selector, [options])

  • selector <string> A selector to search for uncheckbox to check. If there are multiple elements satisfying the selector, the first will be checked. See working with selectors for more details.
  • options <Object>
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element matching selector is successfully unchecked.

This method checks an element matching selector by performing the following steps:

  1. Find an element match matching selector. If there is none, wait until a matching element is attached to the DOM.
  2. Ensure that matched element is a checkbox or a radio input. If not, this method rejects. If the element is already unchecked, this method returns immediately.
  3. Wait for actionability checks on the matched element, unless force option is set. If the element is detached during the checks, the whole action is retried.
  4. Scroll the element into view if needed.
  5. Use page.mouse to click in the center of the element.
  6. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set.
  7. Ensure that the element is now unchecked. If not, this method rejects.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

frame.url()

Returns frame's url.

frame.waitForFunction(pageFunction[, arg, options])

  • pageFunction <function|string> Function to be evaluated in browser context
  • arg <EvaluationArgument> Optional argument to pass to pageFunction
  • options <Object> Optional waiting parameters
    • polling <number|"raf"> If polling is 'raf', then pageFunction is constantly executed in requestAnimationFrame callback. If polling is a number, then it is treated as an interval in milliseconds at which the function would be executed. Defaults to raf.
    • timeout <number> maximum time to wait for in milliseconds. Defaults to 30000 (30 seconds). Pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise<JSHandle>> Promise which resolves when the pageFunction returns a truthy value. It resolves to a JSHandle of the truthy value.

The waitForFunction can be used to observe viewport size change:

const { firefox } = require('playwright');  // Or 'chromium' or 'webkit'.

(async () => {
  const browser = await firefox.launch();
  const page = await browser.newPage();
  const watchDog = page.mainFrame().waitForFunction('window.innerWidth < 100');
  page.setViewportSize({width: 50, height: 50});
  await watchDog;
  await browser.close();
})();

To pass an argument from Node.js to the predicate of frame.waitForFunction function:

const selector = '.foo';
await frame.waitForFunction(selector => !!document.querySelector(selector), selector);

frame.waitForLoadState([state[, options]])

This resolves when the frame reaches a required load state, load by default. The navigation must have been committed when this method is called. If current document has already reached the required state, resolves immediately.

await frame.click('button'); // Click triggers navigation.
await frame.waitForLoadState(); // The promise resolves after 'load' event.

frame.waitForNavigation([options])

  • options <Object> Navigation parameters which might have the following properties:
  • returns: <Promise<null|Response>> Promise which resolves to the main resource response. In case of multiple redirects, the navigation will resolve with the response of the last redirect. In case of navigation to a different anchor or navigation due to History API usage, the navigation will resolve with null.

This resolves when the frame navigates to a new URL. It is useful for when you run code which will indirectly cause the frame to navigate. Consider this example:

const [response] = await Promise.all([
  frame.waitForNavigation(), // The navigation promise resolves after navigation has finished
  frame.click('a.my-link'), // Clicking the link will indirectly cause a navigation
]);

NOTE Usage of the History API to change the URL is considered a navigation.

frame.waitForSelector(selector[, options])

  • selector <string> A selector of an element to wait for. See working with selectors for more details.
  • options <Object>
    • state <"attached"|"detached"|"visible"|"hidden"> Defaults to 'visible'. Can be either:
      • 'attached' - wait for element to be present in DOM.
      • 'detached' - wait for element to not be present in DOM.
      • 'visible' - wait for element to have non-empty bounding box and no visibility:hidden. Note that element without any content or with display:none has an empty bounding box and is not considered visible.
      • 'hidden' - wait for element to be either detached from DOM, or have an empty bounding box or visibility:hidden. This is opposite to the 'visible' option.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise<null|ElementHandle>> Promise which resolves when element specified by selector satisfies state option. Resolves to null if waiting for hidden or detached.

Wait for the selector to satisfy state option (either appear/disappear from dom, or become visible/hidden). If at the moment of calling the method selector already satisfies the condition, the method will return immediately. If the selector doesn't satisfy the condition for the timeout milliseconds, the function will throw.

This method works across navigations:

const { webkit } = require('playwright');  // Or 'chromium' or 'firefox'.

(async () => {
  const browser = await webkit.launch();
  const page = await browser.newPage();
  let currentURL;
  page.mainFrame()
    .waitForSelector('img')
    .then(() => console.log('First URL with image: ' + currentURL));
  for (currentURL of ['https://example.com', 'https://google.com', 'https://bbc.com']) {
    await page.goto(currentURL);
  }
  await browser.close();
})();

frame.waitForTimeout(timeout)

Returns a promise that resolves after the timeout.

Note that frame.waitForTimeout() should only be used for debugging. Tests using the timer in production are going to be flaky. Use signals such as network events, selectors becoming visible and others instead.

class: ElementHandle

ElementHandle represents an in-page DOM element. ElementHandles can be created with the page.$ method.

const { chromium } = require('playwright');  // Or 'firefox' or 'webkit'.

(async () => {
  const browser = await chromium.launch();
  const page = await browser.newPage();
  await page.goto('https://example.com');
  const hrefElement = await page.$('a');
  await hrefElement.click();
  // ...
})();

ElementHandle prevents DOM element from garbage collection unless the handle is disposed. ElementHandles are auto-disposed when their origin frame gets navigated.

ElementHandle instances can be used as an argument in page.$eval() and page.evaluate() methods.

elementHandle.$(selector)

The method finds an element matching the specified selector in the ElementHandle's subtree. See Working with selectors for more details. If no elements match the selector, the return value resolves to null.

elementHandle.$$(selector)

The method finds all elements matching the specified selector in the ElementHandles subtree. See Working with selectors for more details. If no elements match the selector, the return value resolves to [].

elementHandle.$eval(selector, pageFunction[, arg])

The method finds an element matching the specified selector in the ElementHandles subtree and passes it as a first argument to pageFunction. See Working with selectors for more details. If no elements match the selector, the method throws an error.

If pageFunction returns a Promise, then frame.$eval would wait for the promise to resolve and return its value.

Examples:

const tweetHandle = await page.$('.tweet');
expect(await tweetHandle.$eval('.like', node => node.innerText)).toBe('100');
expect(await tweetHandle.$eval('.retweets', node => node.innerText)).toBe('10');

elementHandle.$$eval(selector, pageFunction[, arg])

The method finds all elements matching the specified selector in the ElementHandle's subtree and passes an array of matched elements as a first argument to pageFunction. See Working with selectors for more details.

If pageFunction returns a Promise, then frame.$$eval would wait for the promise to resolve and return its value.

Examples:

<div class="feed">
  <div class="tweet">Hello!</div>
  <div class="tweet">Hi!</div>
</div>

const feedHandle = await page.$('.feed');
expect(await feedHandle.$$eval('.tweet', nodes => nodes.map(n => n.innerText))).toEqual(['Hello!', 'Hi!']);

elementHandle.boundingBox()

  • returns: <Promise<null|Object>>
    • x <number> the x coordinate of the element in pixels.
    • y <number> the y coordinate of the element in pixels.
    • width <number> the width of the element in pixels.
    • height <number> the height of the element in pixels.

This method returns the bounding box of the element (relative to the main frame), or null if the element is not visible.

elementHandle.check([options])

  • options <Object>
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element is successfully checked.

This method checks the element by performing the following steps:

  1. Ensure that element is a checkbox or a radio input. If not, this method rejects. If the element is already checked, this method returns immediately.
  2. Wait for actionability checks on the element, unless force option is set.
  3. Scroll the element into view if needed.
  4. Use page.mouse to click in the center of the element.
  5. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set.
  6. Ensure that the element is now checked. If not, this method rejects.

If the element is detached from the DOM at any moment during the action, this method rejects.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

elementHandle.click([options])

  • options <Object>
    • button <"left"|"right"|"middle"> Defaults to left.
    • clickCount <number> defaults to 1. See UIEvent.detail.
    • delay <number> Time to wait between mousedown and mouseup in milliseconds. Defaults to 0.
    • position <Object> A point to click relative to the top-left corner of element padding box. If not specified, clicks to some visible point of the element.
    • modifiers <Array<"Alt"|"Control"|"Meta"|"Shift">> Modifier keys to press. Ensures that only these modifiers are pressed during the click, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element is successfully clicked.

This method clicks the element by performing the following steps:

  1. Wait for actionability checks on the element, unless force option is set.
  2. Scroll the element into view if needed.
  3. Use page.mouse to click in the center of the element, or the specified position.
  4. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set.

If the element is detached from the DOM at any moment during the action, this method rejects.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

elementHandle.contentFrame()

  • returns: <Promise<null|Frame>> Resolves to the content frame for element handles referencing iframe nodes, or null otherwise

elementHandle.dblclick([options])

  • options <Object>
    • button <"left"|"right"|"middle"> Defaults to left.
    • delay <number> Time to wait between mousedown and mouseup in milliseconds. Defaults to 0.
    • position <Object> A point to double click relative to the top-left corner of element padding box. If not specified, double clicks to some visible point of the element.
    • modifiers <Array<"Alt"|"Control"|"Meta"|"Shift">> Modifier keys to press. Ensures that only these modifiers are pressed during the double click, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element is successfully double clicked.

This method double clicks the element by performing the following steps:

  1. Wait for actionability checks on the element, unless force option is set.
  2. Scroll the element into view if needed.
  3. Use page.mouse to double click in the center of the element, or the specified position.
  4. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set. Note that if the first click of the dblclick() triggers a navigation event, this method will reject.

If the element is detached from the DOM at any moment during the action, this method rejects.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

Note

elementHandle.dblclick() dispatches two click events and a single dblclick event.

elementHandle.dispatchEvent(type[, eventInit])

The snippet below dispatches the click event on the element. Regardless of the visibility state of the elment, click is dispatched. This is equivalend to calling element.click().

await elementHandle.dispatchEvent('click');

Under the hood, it creates an instance of an event based on the given type, initializes it with eventInit properties and dispatches it on the element. Events are composed, cancelable and bubble by default.

Since eventInit is event-specific, please refer to the events documentation for the lists of initial properties:

You can also specify JSHandle as the property value if you want live objects to be passed into the event:

// Note you can only create DataTransfer in Chromium and Firefox
const dataTransfer = await page.evaluateHandle(() => new DataTransfer());
await elementHandle.dispatchEvent('dragstart', { dataTransfer });

elementHandle.fill(value[, options])

  • value <string> Value to set for the <input>, <textarea> or [contenteditable] element.
  • options <Object>
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise>

This method waits for actionability checks, focuses the element, fills it and triggers an input event after filling. If the element is not an <input>, <textarea> or [contenteditable] element, this method throws an error. Note that you can pass an empty string to clear the input field.

elementHandle.focus()

Calls focus on the element.

elementHandle.getAttribute(name)

Returns element attribute value.

elementHandle.hover([options])

  • options <Object>
    • position <Object> A point to hover relative to the top-left corner of element padding box. If not specified, hovers over some visible point of the element.
    • modifiers <Array<"Alt"|"Control"|"Meta"|"Shift">> Modifier keys to press. Ensures that only these modifiers are pressed during the hover, and then restores current modifiers back. If not specified, currently pressed modifiers are used.
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element is successfully hovered.

This method hovers over the element by performing the following steps:

  1. Wait for actionability checks on the element, unless force option is set.
  2. Scroll the element into view if needed.
  3. Use page.mouse to hover over the center of the element, or the specified position.
  4. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set.

If the element is detached from the DOM at any moment during the action, this method rejects.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

elementHandle.innerHTML()

elementHandle.innerText()

elementHandle.ownerFrame()

  • returns: <Promise<null|Frame>> Returns the frame containing the given element.

elementHandle.press(key[, options])

  • key <string> Name of the key to press or a character to generate, such as ArrowLeft or a.
  • options <Object>
    • delay <number> Time to wait between keydown and keyup in milliseconds. Defaults to 0.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise>

Focuses the element, and then uses keyboard.down and keyboard.up.

key can specify the intended keyboardEvent.key value or a single character to generate the text for. A superset of the key values can be found here. Examples of the keys are:

F1 - F12, Digit0- Digit9, KeyA- KeyZ, Backquote, Minus, Equal, Backslash, Backspace, Tab, Delete, Escape, ArrowDown, End, Enter, Home, Insert, PageDown, PageUp, ArrowRight, ArrowUp, etc.

Following modification shortcuts are also suported: Shift, Control, Alt, Meta, ShiftLeft.

Holding down Shift will type the text that corresponds to the key in the upper case.

If key is a single character, it is case-sensitive, so the values a and A will generate different respective texts.

Shortcuts such as key: "Control+o" or key: "Control+Shift+T" are supported as well. When speficied with the modifier, modifier is pressed and being held while the subsequent key is being pressed.

elementHandle.screenshot([options])

  • options <Object> Screenshot options.
    • path <string> The file path to save the image to. The screenshot type will be inferred from file extension. If path is a relative path, then it is resolved relative to current working directory. If no path is provided, the image won't be saved to the disk.
    • type <"png"|"jpeg"> Specify screenshot type, defaults to png.
    • quality <number> The quality of the image, between 0-100. Not applicable to png images.
    • omitBackground <boolean> Hides default white background and allows capturing screenshots with transparency. Not applicable to jpeg images. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise<Buffer>> Promise which resolves to buffer with the captured screenshot.

This method waits for the actionability checks, then scrolls element into view before taking a screenshot. If the element is detached from DOM, the method throws an error.

elementHandle.scrollIntoViewIfNeeded([options])

This method waits for actionability checks, then tries to scroll element into view, unless it is completely visible as defined by IntersectionObserver's ratio.

Throws when elementHandle does not point to an element connected to a Document or a ShadowRoot.

elementHandle.selectOption(values[, options])

  • values <null|string|ElementHandle|Array<string>|Object|Array<ElementHandle>|Array<Object>> Options to select. If the <select> has the multiple attribute, all matching options are selected, otherwise only the first option matching one of the passed options is selected. String values are equivalent to {value:'string'}. Option is considered matching if all specified properties match.
    • value <string> Matches by option.value.
    • label <string> Matches by option.label.
    • index <number> Matches by the index.
  • options <Object>
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise<Array<string>>> An array of option values that have been successfully selected.

Triggers a change and input event once all the provided options have been selected. If element is not a <select> element, the method throws an error.

// single selection matching the value
handle.selectOption('blue');

// single selection matching both the value and the label
handle.selectOption({ label: 'Blue' });

// multiple selection
handle.selectOption('red', 'green', 'blue');

// multiple selection for blue, red and second option
handle.selectOption({ value: 'blue' }, { index: 2 }, 'red');

elementHandle.selectText([options])

This method waits for actionability checks, then focuses the element and selects all its text content.

elementHandle.setInputFiles(files[, options])

This method expects elementHandle to point to an input element.

Sets the value of the file input to these file paths or files. If some of the filePaths are relative paths, then they are resolved relative to the current working directory. For empty array, clears the selected files.

elementHandle.textContent()

elementHandle.toString()

elementHandle.type(text[, options])

  • text <string> A text to type into a focused element.
  • options <Object>
    • delay <number> Time to wait between key presses in milliseconds. Defaults to 0.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise>

Focuses the element, and then sends a keydown, keypress/input, and keyup event for each character in the text.

To press a special key, like Control or ArrowDown, use elementHandle.press.

await elementHandle.type('Hello'); // Types instantly
await elementHandle.type('World', {delay: 100}); // Types slower, like a user

An example of typing into a text field and then submitting the form:

const elementHandle = await page.$('input');
await elementHandle.type('some text');
await elementHandle.press('Enter');

elementHandle.uncheck([options])

  • options <Object>
    • force <boolean> Whether to bypass the actionability checks. Defaults to false.
    • noWaitAfter <boolean> Actions that initiate navigations are waiting for these navigations to happen and for pages to start loading. You can opt out of waiting via setting this flag. You would only need this option in the exceptional cases such as navigating to inaccessible pages. Defaults to false.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise> Promise that resolves when the element is successfully unchecked.

This method checks the element by performing the following steps:

  1. Ensure that element is a checkbox or a radio input. If not, this method rejects. If the element is already unchecked, this method returns immediately.
  2. Wait for actionability checks on the element, unless force option is set.
  3. Scroll the element into view if needed.
  4. Use page.mouse to click in the center of the element.
  5. Wait for initiated navigations to either succeed or fail, unless noWaitAfter option is set.
  6. Ensure that the element is now unchecked. If not, this method rejects.

If the element is detached from the DOM at any moment during the action, this method rejects.

When all steps combined have not finished during the specified timeout, this method rejects with a TimeoutError. Passing zero timeout disables this.

elementHandle.waitForElementState(state[, options])

Depending on the state parameter, this method waits for one of the actionability checks to pass. This method throws when the element is detached while waiting, unless waiting for the "hidden" state.

  • "visible" Wait until the element is visible.
  • "hidden" Wait until the element is not visible or not attached. Note that waiting for hidden does not throw when the element detaches.
  • "stable" Wait until the element is both visible and stable.
  • "enabled" Wait until the element is enabled.
  • "disabled" Wait until the element is not enabled.

If the element does not satisfy the condition for the timeout milliseconds, this method will throw.

elementHandle.waitForSelector(selector[, options])

  • selector <string> A selector of an element to wait for, relative to the element handle. See working with selectors for more details.
  • options <Object>
    • state <"attached"|"detached"|"visible"|"hidden"> Defaults to 'visible'. Can be either:
      • 'attached' - wait for element to be present in DOM.
      • 'detached' - wait for element to not be present in DOM.
      • 'visible' - wait for element to have non-empty bounding box and no visibility:hidden. Note that element without any content or with display:none has an empty bounding box and is not considered visible.
      • 'hidden' - wait for element to be either detached from DOM, or have an empty bounding box or visibility:hidden. This is opposite to the 'visible' option.
    • timeout <number> Maximum time in milliseconds, defaults to 30 seconds, pass 0 to disable timeout. The default value can be changed by using the browserContext.setDefaultTimeout(timeout) or page.setDefaultTimeout(timeout) methods.
  • returns: <Promise<null|ElementHandle>> Promise that resolves when element specified by selector satisfies state option. Resolves to null if waiting for hidden or detached.

Wait for the selector relative to the element handle to satisfy state option (either appear/disappear from dom, or become visible/hidden). If at the moment of calling the method selector already satisfies the condition, the method will return immediately. If the selector doesn't satisfy the condition for the timeout milliseconds, the function will throw.

await page.setContent(`<div><span></span></div>`);
const div = await page.$('div');
// Waiting for the 'span' selector relative to the div.
const span = await div.waitForSelector('span', { state: 'attached' });

Note

This method does not work across navigations, use page.waitForSelector(selector[, options]) instead.

class: JSHandle

JSHandle represents an in-page JavaScript object. JSHandles can be created with the page.evaluateHandle method.

const windowHandle = await page.evaluateHandle(() => window);
// ...

JSHandle prevents the referenced JavaScript object being garbage collected unless the handle is disposed. JSHandles are auto-disposed when their origin frame gets navigated or the parent context gets destroyed.

JSHandle instances can be used as an argument in page.$eval(), page.evaluate() and page.evaluateHandle() methods.

jsHandle.asElement()

Returns either null or the object handle itself, if the object handle is an instance of ElementHandle.

jsHandle.dispose()

  • returns: <Promise> Promise which resolves when the object handle is successfully disposed.

The jsHandle.dispose method stops referencing the element handle.

jsHandle.evaluate(pageFunction[, arg])

  • pageFunction <function> Function to be evaluated in browser context
  • arg <EvaluationArgument> Optional argument to pass to pageFunction
  • returns: <Promise<Serializable>> Promise which resolves to the return value of pageFunction

This method passes this handle as the first argument to pageFunction.

If pageFunction returns a Promise, then handle.evaluate would wait for the promise to resolve and return its value.

Examples:

const tweetHandle = await page.$('.tweet .retweets');
expect(await tweetHandle.evaluate((node, suffix) => node.innerText, ' retweets')).toBe('10 retweets');

jsHandle.evaluateHandle(pageFunction[, arg])

  • pageFunction <function|string> Function to be evaluated
  • arg <EvaluationArgument> Optional argument to pass to pageFunction
  • returns: <Promise<JSHandle>> Promise which resolves to the return value of pageFunction as in-page object (JSHandle)

This method passes this handle as the first argument to pageFunction.

The only difference between jsHandle.evaluate and jsHandle.evaluateHandle is that jsHandle.evaluateHandle returns in-page object (JSHandle).

If the function passed to the jsHandle.evaluateHandle returns a Promise, then jsHandle.evaluateHandle would wait for the promise to resolve and return its value.

See page.evaluateHandle() for more details.

jsHandle.getProperties()

The method returns a map with own property names as keys and JSHandle instances for the property values.

const handle = await page.evaluateHandle(() => ({window, document}));
const properties = await handle.getProperties();
const windowHandle = properties.get('window');
const documentHandle = properties.get('document');
await handle.dispose();

jsHandle.getProperty(propertyName)

Fetches a single property from the referenced object.

jsHandle.jsonValue()

Returns a JSON representation of the object. If the object has a toJSON function, it will not be called.

Note

The method will return an empty JSON object if the referenced object is not stringifiable. It will throw an error if the object has circular references.

class: ConsoleMessage

ConsoleMessage objects are dispatched by page via the 'console' event.

consoleMessage.args()

consoleMessage.location()

  • returns: <Object>
    • url <string> URL of the resource if available, otherwise empty string.
    • lineNumber <number> 0-based line number in the resource.
    • columnNumber <number> 0-based column number in the resource.

consoleMessage.text()

consoleMessage.type()

One of the following values: 'log', 'debug', 'info', 'error', 'warning', 'dir', 'dirxml', 'table', 'trace', 'clear', 'startGroup', 'startGroupCollapsed', 'endGroup', 'assert', 'profile', 'profileEnd', 'count', 'timeEnd'.

class: Dialog

Dialog objects are dispatched by page via the 'dialog' event.

An example of using Dialog class:

const { chromium } = require('playwright');  // Or 'firefox' or 'webkit'.

(async () => {
  const browser = await chromium.launch();
  const page = await browser.newPage();
  page.on('dialog', async dialog => {
    console.log(dialog.message());
    await dialog.dismiss();
    await browser.close();
  });
  page.evaluate(() => alert('1'));
})();

dialog.accept([promptText])

  • promptText <string> A text to enter in prompt. Does not cause any effects if the dialog's type is not prompt.
  • returns: <Promise> Promise which resolves when the dialog has been accepted.

dialog.defaultValue()

  • returns: <string> If dialog is prompt, returns default prompt value. Otherwise, returns empty string.

dialog.dismiss()

  • returns: <Promise> Promise which resolves when the dialog has been dismissed.

dialog.message()

  • returns: <string> A message displayed in the dialog.

dialog.type()

  • returns: <string> Dialog's type, can be one of alert, beforeunload, confirm or prompt.

class: Download

Download objects are dispatched by page via the 'download' event.

All the downloaded files belonging to the browser context are deleted when the browser context is closed. All downloaded files are deleted when the browser closes.

Download event is emitted once the download starts. Download path becomes available once download completes:

const [ download ] = await Promise.all([
  page.waitForEvent('download'), // wait for download to start
  page.click('a')
]);
// wait for download to complete
const path = await download.path();
...

Note

Browser context must be created with the acceptDownloads set to true when user needs access to the downloaded content. If acceptDownloads is not set or set to false, download events are emitted, but the actual download is not performed and user has no access to the downloaded files.

download.createReadStream()

Returns readable stream for current download or null if download failed.

download.delete()

Deletes the downloaded file.

download.failure()

Returns download error if any.

download.path()

Returns path to the downloaded file in case of successful download.

download.saveAs(path)

  • path <string> Path where the download should be saved.
  • returns: <Promise>

Saves the download to a user-specified path.

download.suggestedFilename()

Returns suggested filename for this download. It is typically computed by the browser from the Content-Disposition response header or the download attribute. See the spec on whatwg. Different browsers can use different logic for computing it.

download.url()

Returns downloaded url.

class: FileChooser

FileChooser objects are dispatched by the page in the 'filechooser' event.

page.on('filechooser', async (fileChooser) => {
  await fileChooser.setFiles('/tmp/myfile.pdf');
});

fileChooser.element()

Returns input element associated with this file chooser.

fileChooser.isMultiple()

Returns whether this file chooser accepts multiple files.

fileChooser.page()

Returns page this file chooser belongs to.

fileChooser.setFiles(files[, options])

Sets the value of the file input this chooser is associated with. If some of the filePaths are relative paths, then they are resolved relative to the current working directory. For empty array, clears the selected files.

class: Keyboard

Keyboard provides an api for managing a virtual keyboard. The high level api is keyboard.type, which takes raw characters and generates proper keydown, keypress/input, and keyup events on your page.

For finer control, you can use keyboard.down, keyboard.up, and keyboard.insertText to manually fire events as if they were generated from a real keyboard.

An example of holding down Shift in order to select and delete some text:

await page.keyboard.type('Hello World!');
await page.keyboard.press('ArrowLeft');

await page.keyboard.down('Shift');
for (let i = 0; i < ' World'.length; i++)
  await page.keyboard.press('ArrowLeft');
await page.keyboard.up('Shift');

await page.keyboard.press('Backspace');
// Result text will end up saying 'Hello!'

An example of pressing uppercase A

await page.keyboard.press('Shift+KeyA');
// or
await page.keyboard.press('Shift+A');

An example to trigger select-all with the keyboard

// on Windows and Linux
await page.keyboard.press('Control+A');
// on macOS
await page.keyboard.press('Meta+A');

keyboard.down(key)

  • key <string> Name of the key to press or a character to generate, such as ArrowLeft or a.
  • returns: <Promise>

Dispatches a keydown event.

key can specify the intended keyboardEvent.key value or a single character to generate the text for. A superset of the key values can be found here. Examples of the keys are:

F1 - F12, Digit0- Digit9, KeyA- KeyZ, Backquote, Minus, Equal, Backslash, Backspace, Tab, Delete, Escape, ArrowDown, End, Enter, Home, Insert, PageDown, PageUp, ArrowRight, ArrowUp, etc.

Following modification shortcuts are also suported: Shift, Control, Alt, Meta, ShiftLeft.

Holding down Shift will type the text that corresponds to the key in the upper case.

If key is a single character, it is case-sensitive, so the values a and A will generate different respective texts.

If key is a modifier key, Shift, Meta, Control, or Alt, subsequent key presses will be sent with that modifier active. To release the modifier key, use keyboard.up.

After the key is pressed once, subsequent calls to keyboard.down will have repeat set to true. To release the key, use keyboard.up.

Note

Modifier keys DO influence keyboard.down. Holding down Shift will type the text in upper case.

keyboard.insertText(text)

  • text <string> Sets input to the specified text value.
  • returns: <Promise>

Dispatches only input event, does not emit the keydown, keyup or keypress events.

page.keyboard.insertText('嗨');

Note

Modifier keys DO NOT effect keyboard.insertText. Holding down Shift will not type the text in upper case.

keyboard.press(key[, options])

  • key <string> Name of the key to press or a character to generate, such as ArrowLeft or a.
  • options <Object>
    • delay <number> Time to wait between keydown and keyup in milliseconds. Defaults to 0.
  • returns: <Promise>

key can specify the intended keyboardEvent.key value or a single character to generate the text for. A superset of the key values can be found here. Examples of the keys are:

F1 - F12, Digit0- Digit9, KeyA- KeyZ, Backquote, Minus, Equal, Backslash, Backspace, Tab, Delete, Escape, ArrowDown, End, Enter, Home, Insert, PageDown, PageUp, ArrowRight, ArrowUp, etc.

Following modification shortcuts are also suported: Shift, Control, Alt, Meta, ShiftLeft.

Holding down Shift will type the text that corresponds to the key in the upper case.

If key is a single character, it is case-sensitive, so the values a and A will generate different respective texts.

Shortcuts such as key: "Control+o" or key: "Control+Shift+T" are supported as well. When speficied with the modifier, modifier is pressed and being held while the subsequent key is being pressed.

const page = await browser.newPage();
await page.goto('https://keycode.info');
await page.keyboard.press('A');
await page.screenshot({ path: 'A.png' });
await page.keyboard.press('ArrowLeft');
await page.screenshot({ path: 'ArrowLeft.png' });
await page.keyboard.press('Shift+O');
await page.screenshot({ path: 'O.png' });
await browser.close();

Shortcut for keyboard.down and keyboard.up.

keyboard.type(text[, options])

  • text <string> A text to type into a focused element.
  • options <Object>
    • delay <number> Time to wait between key presses in milliseconds. Defaults to 0.
  • returns: <Promise>

Sends a keydown, keypress/input, and keyup event for each character in the text.

To press a special key, like Control or ArrowDown, use keyboard.press.

await page.keyboard.type('Hello'); // Types instantly
await page.keyboard.type('World', {delay: 100}); // Types slower, like a user

Note

Modifier keys DO NOT effect keyboard.type. Holding down Shift will not type the text in upper case.

keyboard.up(key)

  • key <string> Name of the key to press or a character to generate, such as ArrowLeft or a.
  • returns: <Promise>

Dispatches a keyup event.

class: Mouse

The Mouse class operates in main-frame CSS pixels relative to the top-left corner of the viewport.

Every page object has its own Mouse, accessible with page.mouse.

// Using ‘page.mouse’ to trace a 100x100 square.
await page.mouse.move(0, 0);
await page.mouse.down();
await page.mouse.move(0, 100);
await page.mouse.move(100, 100);
await page.mouse.move(100, 0);
await page.mouse.move(0, 0);
await page.mouse.up();

mouse.click(x, y[, options])

  • x <number>
  • y <number>
  • options <Object>
    • button <"left"|"right"|"middle"> Defaults to left.
    • clickCount <number> defaults to 1. See UIEvent.detail.
    • delay <number> Time to wait between mousedown and mouseup in milliseconds. Defaults to 0.
  • returns: <Promise>

Shortcut for mouse.move, mouse.down and mouse.up.

mouse.dblclick(x, y[, options])

  • x <number>
  • y <number>
  • options <Object>
    • button <"left"|"right"|"middle"> Defaults to left.
    • delay <number> Time to wait between mousedown and mouseup in milliseconds. Defaults to 0.
  • returns: <Promise>

Shortcut for mouse.move, mouse.down, mouse.up, mouse.down and mouse.up.

mouse.down([options])

Dispatches a mousedown event.

mouse.move(x, y[, options])

Dispatches a mousemove event.

mouse.up([options])

Dispatches a mouseup event.

class: Request

Whenever the page sends a request for a network resource the following sequence of events are emitted by Page:

  • 'request' emitted when the request is issued by the page.
  • 'response' emitted when/if the response status and headers are received for the request.
  • 'requestfinished' emitted when the response body is downloaded and the request is complete.

If request fails at some point, then instead of 'requestfinished' event (and possibly instead of 'response' event), the 'requestfailed' event is emitted.

Note

HTTP Error responses, such as 404 or 503, are still successful responses from HTTP standpoint, so request will complete with 'requestfinished' event.

If request gets a 'redirect' response, the request is successfully finished with the 'requestfinished' event, and a new request is issued to a redirected url.

request.failure()

  • returns: <null|Object> Object describing request failure, if any
    • errorText <string> Human-readable error message, e.g. 'net::ERR_FAILED'.

The method returns null unless this request has failed, as reported by requestfailed event.

Example of logging of all the failed requests:

page.on('requestfailed', request => {
  console.log(request.url() + ' ' + request.failure().errorText);
});

request.frame()

  • returns: <Frame> A Frame that initiated this request.

request.headers()

  • returns: <Object<string, string>> An object with HTTP headers associated with the request. All header names are lower-case.

request.isNavigationRequest()

Whether this request is driving frame's navigation.

request.method()

  • returns: <string> Request's method (GET, POST, etc.)

request.postData()

  • returns: <null|string> Request's post body, if any.

request.postDataBuffer()

  • returns: <null|Buffer> Request's post body in a binary form, if any.

request.postDataJSON()

  • returns: <null|Object> Parsed request's body for form-urlencoded and JSON as a fallback if any.

When the response is application/x-www-form-urlencoded then a key/value object of the values will be returned. Otherwise it will be parsed as JSON.

request.redirectedFrom()

  • returns: <null|Request> Request that was redirected by the server to this one, if any.

When the server responds with a redirect, Playwright creates a new Request object. The two requests are connected by redirectedFrom() and redirectedTo() methods. When multiple server redirects has happened, it is possible to construct the whole redirect chain by repeatedly calling redirectedFrom().

For example, if the website http://example.com redirects to https://example.com:

const response = await page.goto('http://example.com');
console.log(response.request().redirectedFrom().url()); // 'http://example.com'

If the website https://google.com has no redirects:

const response = await page.goto('https://google.com');
console.log(response.request().redirectedFrom()); // null

request.redirectedTo()

  • returns: <null|Request> New request issued by the browser if the server responded with redirect.

This method is the opposite of request.redirectedFrom():

console.log(request.redirectedFrom().redirectedTo() === request); // true

request.resourceType()

Contains the request's resource type as it was perceived by the rendering engine. ResourceType will be one of the following: document, stylesheet, image, media, font, script, texttrack, xhr, fetch, eventsource, websocket, manifest, other.

request.response()

request.url()

  • returns: <string> URL of the request.

class: Response

Response class represents responses which are received by page.

response.body()

  • returns: <Promise<Buffer>> Promise which resolves to a buffer with response body.

response.finished()

  • returns: <Promise<null|Error>> Waits for this response to finish, returns failure error if request failed.

response.frame()

  • returns: <Frame> A Frame that initiated this response.

response.headers()

  • returns: <Object<string, string>> An object with HTTP headers associated with the response. All header names are lower-case.

response.json()

  • returns: <Promise<Serializable>> Promise which resolves to a JSON representation of response body.

This method will throw if the response body is not parsable via JSON.parse.

response.ok()

Contains a boolean stating whether the response was successful (status in the range 200-299) or not.

response.request()

response.status()

Contains the status code of the response (e.g., 200 for a success).

response.statusText()

Contains the status text of the response (e.g. usually an "OK" for a success).

response.text()

  • returns: <Promise<string>> Promise which resolves to a text representation of response body.

response.url()

Contains the URL of the response.

class: Selectors

Selectors can be used to install custom selector engines. See Working with selectors for more information.

selectors.register(name, script[, options])

  • name <string> Name that is used in selectors as a prefix, e.g. {name: 'foo'} enables foo=myselectorbody selectors. May only contain [a-zA-Z0-9_] characters.
  • script <function|string|Object> Script that evaluates to a selector engine instance.
  • options <Object>
    • contentScript <boolean> Whether to run this selector engine in isolated JavaScript environment. This environment has access to the same DOM, but not any JavaScript objects from the frame's scripts. Defaults to false. Note that running as a content script is not guaranteed when this engine is used together with other registered engines.
  • returns: <Promise>

An example of registering selector engine that queries elements based on a tag name:

const { selectors, firefox } = require('playwright');  // Or 'chromium' or 'webkit'.

(async () => {
  // Must be a function that evaluates to a selector engine instance.
  const createTagNameEngine = () => ({
    // Creates a selector that matches given target when queried at the root.
    // Can return undefined if unable to create one.
    create(root, target) {
      return root.querySelector(target.tagName) === target ? target.tagName : undefined;
    },

    // Returns the first element matching given selector in the root's subtree.
    query(root, selector) {
      return root.querySelector(selector);
    },

    // Returns all elements matching given selector in the root's subtree.
    queryAll(root, selector) {
      return Array.from(root.querySelectorAll(selector));
    }
  });

  // Register the engine. Selectors will be prefixed with "tag=".
  await selectors.register('tag', createTagNameEngine);

  const browser = await firefox.launch();
  const page = await browser.newPage();
  await page.setContent(`<div><button>Click me</button></div>`);

  // Use the selector prefixed with its name.
  const button = await page.$('tag=button');
  // Combine it with other selector engines.
  await page.click('tag=div >> text="Click me"');
  // Can use it in any methods supporting selectors.
  const buttonCount = await page.$$eval('tag=button', buttons => buttons.length);

  await browser.close();
})();

class: Route

Whenever a network route is set up with page.route(url, handler) or browserContext.route(url, handler), the Route object allows to handle the route.

route.abort([errorCode])

  • errorCode <string> Optional error code. Defaults to failed, could be one of the following:
    • 'aborted' - An operation was aborted (due to user action)
    • 'accessdenied' - Permission to access a resource, other than the network, was denied
    • 'addressunreachable' - The IP address is unreachable. This usually means that there is no route to the specified host or network.
    • 'blockedbyclient' - The client chose to block the request.
    • 'blockedbyresponse' - The request failed because the response was delivered along with requirements which are not met ('X-Frame-Options' and 'Content-Security-Policy' ancestor checks, for instance).
    • 'connectionaborted' - A connection timed out as a result of not receiving an ACK for data sent.
    • 'connectionclosed' - A connection was closed (corresponding to a TCP FIN).
    • 'connectionfailed' - A connection attempt failed.
    • 'connectionrefused' - A connection attempt was refused.
    • 'connectionreset' - A connection was reset (corresponding to a TCP RST).
    • 'internetdisconnected' - The Internet connection has been lost.
    • 'namenotresolved' - The host name could not be resolved.
    • 'timedout' - An operation timed out.
    • 'failed' - A generic failure occurred.
  • returns: <Promise>

Aborts the route's request.

route.continue([overrides])

  • overrides <Object> Optional request overrides, which can be one of the following:
    • method <string> If set changes the request method (e.g. GET or POST)
    • postData <string|Buffer> If set changes the post data of request
    • headers <Object<string, string>> If set changes the request HTTP headers. Header values will be converted to a string.
  • returns: <Promise>

Continues route's request with optional overrides.

await page.route('**/*', (route, request) => {
  // Override headers
  const headers = {
    ...request.headers(),
    foo: 'bar', // set "foo" header
    origin: undefined, // remove "origin" header
  };
  route.continue({headers});
});

route.fulfill(response)

  • response <Object> Response that will fulfill this route's request.
    • status <number> Response status code, defaults to 200.
    • headers <Object<string, string>> Optional response headers. Header values will be converted to a string.
    • contentType <string> If set, equals to setting Content-Type response header.
    • body <string|Buffer> Optional response body.
    • path <string> Optional file path to respond with. The content type will be inferred from file extension. If path is a relative path, then it is resolved relative to current working directory.
  • returns: <Promise>

Fulfills route's request with given response.

An example of fulfilling all requests with 404 responses:

await page.route('**/*', route => {
  route.fulfill({
    status: 404,
    contentType: 'text/plain',
    body: 'Not Found!'
  });
});

An example of serving static file:

await page.route('**/xhr_endpoint', route => route.fulfill({ path: 'mock_data.json' }));

route.request()

  • returns: <Request> A request to be routed.

class: TimeoutError

TimeoutError is emitted whenever certain operations are terminated due to timeout, e.g. page.waitForSelector(selector[, options]) or browserType.launch([options]).

class: Accessibility

The Accessibility class provides methods for inspecting Chromium's accessibility tree. The accessibility tree is used by assistive technology such as screen readers or switches.

Accessibility is a very platform-specific thing. On different platforms, there are different screen readers that might have wildly different output.

Blink - Chromium's rendering engine - has a concept of "accessibility tree", which is then translated into different platform-specific APIs. Accessibility namespace gives users access to the Blink Accessibility Tree.

Most of the accessibility tree gets filtered out when converting from Blink AX Tree to Platform-specific AX-Tree or by assistive technologies themselves. By default, Playwright tries to approximate this filtering, exposing only the "interesting" nodes of the tree.

accessibility.snapshot([options])

  • options <Object>
    • interestingOnly <boolean> Prune uninteresting nodes from the tree. Defaults to true.
    • root <ElementHandle> The root DOM element for the snapshot. Defaults to the whole page.
  • returns: <Promise<null|Object>> An AXNode object with the following properties:
    • role <string> The role.
    • name <string> A human readable name for the node.
    • value <string|number> The current value of the node, if applicable.
    • description <string> An additional human readable description of the node, if applicable.
    • keyshortcuts <string> Keyboard shortcuts associated with this node, if applicable.
    • roledescription <string> A human readable alternative to the role, if applicable.
    • valuetext <string> A description of the current value, if applicable.
    • disabled <boolean> Whether the node is disabled, if applicable.
    • expanded <boolean> Whether the node is expanded or collapsed, if applicable.
    • focused <boolean> Whether the node is focused, if applicable.
    • modal <boolean> Whether the node is modal, if applicable.
    • multiline <boolean> Whether the node text input supports multiline, if applicable.
    • multiselectable <boolean> Whether more than one child can be selected, if applicable.
    • readonly <boolean> Whether the node is read only, if applicable.
    • required <boolean> Whether the node is required, if applicable.
    • selected <boolean> Whether the node is selected in its parent node, if applicable.
    • checked <boolean|"mixed"> Whether the checkbox is checked, or "mixed", if applicable.
    • pressed <boolean|"mixed"> Whether the toggle button is checked, or "mixed", if applicable.
    • level <number> The level of a heading, if applicable.
    • valuemin <number> The minimum value in a node, if applicable.
    • valuemax <number> The maximum value in a node, if applicable.
    • autocomplete <string> What kind of autocomplete is supported by a control, if applicable.
    • haspopup <string> What kind of popup is currently being shown for a node, if applicable.
    • invalid <string> Whether and in what way this node's value is invalid, if applicable.
    • orientation <string> Whether the node is oriented horizontally or vertically, if applicable.
    • children <Array<Object>> Child AXNodes of this node, if any, if applicable.

Captures the current state of the accessibility tree. The returned object represents the root accessible node of the page.

Note

The Chromium accessibility tree contains nodes that go unused on most platforms and by most screen readers. Playwright will discard them as well for an easier to process tree, unless interestingOnly is set to false.

An example of dumping the entire accessibility tree:

const snapshot = await page.accessibility.snapshot();
console.log(snapshot);

An example of logging the focused node's name:

const snapshot = await page.accessibility.snapshot();
const node = findFocusedNode(snapshot);
console.log(node && node.name);

function findFocusedNode(node) {
  if (node.focused)
    return node;
  for (const child of node.children || []) {
    const foundNode = findFocusedNode(child);
    return foundNode;
  }
  return null;
}

class: Worker

The Worker class represents a WebWorker. worker event is emitted on the page object to signal a worker creation. close event is emitted on the worker object when the worker is gone.

page.on('worker', worker => {
  console.log('Worker created: ' + worker.url());
  worker.on('close', worker => console.log('Worker destroyed: ' + worker.url()));
});

console.log('Current workers:');
for (const worker of page.workers())
  console.log('  ' + worker.url());

event: 'close'

Emitted when this dedicated WebWorker is terminated.

worker.evaluate(pageFunction[, arg])

If the function passed to the worker.evaluate returns a Promise, then worker.evaluate would wait for the promise to resolve and return its value.

If the function passed to the worker.evaluate returns a non-Serializable value, then worker.evaluate resolves to undefined. DevTools Protocol also supports transferring some additional values that are not serializable by JSON: -0, NaN, Infinity, -Infinity, and bigint literals.

worker.evaluateHandle(pageFunction[, arg])

  • pageFunction <function|string> Function to be evaluated in the page context
  • arg <EvaluationArgument> Optional argument to pass to pageFunction
  • returns: <Promise<JSHandle>> Promise which resolves to the return value of pageFunction as in-page object (JSHandle)

The only difference between worker.evaluate and worker.evaluateHandle is that worker.evaluateHandle returns in-page object (JSHandle).

If the function passed to the worker.evaluateHandle returns a Promise, then worker.evaluateHandle would wait for the promise to resolve and return its value.

worker.url()

class: BrowserServer

event: 'close'

Emitted when the browser server closes.

browserServer.close()

Closes the browser gracefully and makes sure the process is terminated.

browserServer.kill()

Kills the browser process and waits for the process to exit.

browserServer.process()

  • returns: <ChildProcess> Spawned browser application process.

browserServer.wsEndpoint()

  • returns: <string> Browser websocket url.

Browser websocket endpoint which can be used as an argument to browserType.connect(options) to establish connection to the browser.

class: BrowserType

BrowserType provides methods to launch a specific browser instance or connect to an existing one. The following is a typical example of using Playwright to drive automation:

const { chromium } = require('playwright');  // Or 'firefox' or 'webkit'.

(async () => {
  const browser = await chromium.launch();
  const page = await browser.newPage();
  await page.goto('https://example.com');
  // other actions...
  await browser.close();
})();

browserType.connect(options)

  • options <Object>
    • wsEndpoint <string> A browser websocket endpoint to connect to. required
    • slowMo <number> Slows down Playwright operations by the specified amount of milliseconds. Useful so that you can see what is going on. Defaults to 0.
    • logger <Logger> Logger sink for Playwright logging.
    • timeout <number> Maximum time in milliseconds to wait for the connection to be established. Defaults to 30000 (30 seconds). Pass 0 to disable timeout.
  • returns: <Promise<Browser>>

This methods attaches Playwright to an existing browser instance.

browserType.executablePath()

  • returns: <string> A path where Playwright expects to find a bundled browser executable.

browserType.launch([options])

  • options <Object> Set of configurable options to set on the browser. Can have the following fields:
    • headless <boolean> Whether to run browser in headless mode. More details for Chromium and Firefox. Defaults to true unless the devtools option is true.
    • executablePath <string> Path to a browser executable to run instead of the bundled one. If executablePath is a relative path, then it is resolved relative to current working directory. Note that Playwright only works with the bundled Chromium, Firefox or WebKit, use at your own risk.
    • args <Array<string>> Additional arguments to pass to the browser instance. The list of Chromium flags can be found here.
    • ignoreDefaultArgs <boolean|Array<string>> If true, Playwright does not pass its own configurations args and only uses the ones from args. If an array is given, then filters out the given default arguments. Dangerous option; use with care. Defaults to false.
    • proxy <Object> Network proxy settings.
      • server <string> Proxy to be used for all requests. HTTP and SOCKS proxies are supported, for example http://myproxy.com:3128 or socks5://myproxy.com:3128. Short form myproxy.com:3128 is considered an HTTP proxy.
      • bypass <string> Optional coma-separated domains to bypass proxy, for example ".com, chromium.org, .domain.com".
      • username <string> Optional username to use if HTTP proxy requires authentication.
      • password <string> Optional password to use if HTTP proxy requires authentication.
    • downloadsPath <string> If specified, accepted downloads are downloaded into this folder. Otherwise, temporary folder is created and is deleted when browser is closed.
    • chromiumSandbox <boolean> Enable Chromium sandboxing. Defaults to true.
    • firefoxUserPrefs <Object<string, string|number|boolean>> Firefox user preferences. Learn more about the Firefox user preferences at about:config.
    • handleSIGINT <boolean> Close the browser process on Ctrl-C. Defaults to true.
    • handleSIGTERM <boolean> Close the browser process on SIGTERM. Defaults to true.
    • handleSIGHUP <boolean> Close the browser process on SIGHUP. Defaults to true.
    • logger <Logger> Logger sink for Playwright logging.
    • timeout <number> Maximum time in milliseconds to wait for the browser instance to start. Defaults to 30000 (30 seconds). Pass 0 to disable timeout.
    • env <Object<string, string|number|boolean>> Specify environment variables that will be visible to the browser. Defaults to process.env.
    • devtools <boolean> Chromium-only Whether to auto-open a Developer Tools panel for each tab. If this option is true, the headless option will be set false.
    • slowMo <number> Slows down Playwright operations by the specified amount of milliseconds. Useful so that you can see what is going on.
  • returns: <Promise<Browser>> Promise which resolves to browser instance.

You can use ignoreDefaultArgs to filter out --mute-audio from default arguments:

const browser = await chromium.launch({  // Or 'firefox' or 'webkit'.
  ignoreDefaultArgs: ['--mute-audio']
});

Chromium-only Playwright can also be used to control the Chrome browser, but it works best with the version of Chromium it is bundled with. There is no guarantee it will work with any other version. Use executablePath option with extreme caution.

If Google Chrome (rather than Chromium) is preferred, a Chrome Canary or Dev Channel build is suggested.

In browserType.launch([options]) above, any mention of Chromium also applies to Chrome.

See this article for a description of the differences between Chromium and Chrome. This article describes some differences for Linux users.

browserType.launchPersistentContext(userDataDir, [options])

  • userDataDir <string> Path to a User Data Directory, which stores browser session data like cookies and local storage. More details for Chromium and Firefox.
  • options <Object> Set of configurable options to set on the browser. Can have the following fields:
    • headless <boolean> Whether to run browser in headless mode. More details for Chromium and Firefox. Defaults to true unless the devtools option is true.
    • executablePath <string> Path to a browser executable to run instead of the bundled one. If executablePath is a relative path, then it is resolved relative to current working directory. BEWARE: Playwright is only guaranteed to work with the bundled Chromium, Firefox or WebKit, use at your own risk.
    • args <Array<string>> Additional arguments to pass to the browser instance. The list of Chromium flags can be found here.
    • ignoreDefaultArgs <boolean|Array<string>> If true, then do not use any of the default arguments. If an array is given, then filter out the given default arguments. Dangerous option; use with care. Defaults to false.
    • proxy <Object> Network proxy settings.
      • server <string> Proxy to be used for all requests. HTTP and SOCKS proxies are supported, for example http://myproxy.com:3128 or socks5://myproxy.com:3128. Short form myproxy.com:3128 is considered an HTTP proxy.
      • bypass <string> Optional coma-separated domains to bypass proxy, for example ".com, chromium.org, .domain.com".
      • username <string> Optional username to use if HTTP proxy requires authentication.
      • password <string> Optional password to use if HTTP proxy requires authentication.
    • acceptDownloads <boolean> Whether to automatically download all the attachments. Defaults to false where all the downloads are canceled.
    • downloadsPath <string> If specified, accepted downloads are downloaded into this folder. Otherwise, temporary folder is created and is deleted when browser is closed.
    • chromiumSandbox <boolean> Enable Chromium sandboxing. Defaults to true.
    • handleSIGINT <boolean> Close the browser process on Ctrl-C. Defaults to true.
    • handleSIGTERM <boolean> Close the browser process on SIGTERM. Defaults to true.
    • handleSIGHUP <boolean> Close the browser process on SIGHUP. Defaults to true.
    • logger <Logger> Logger sink for Playwright logging.
    • timeout <number> Maximum time in milliseconds to wait for the browser instance to start. Defaults to 30000 (30 seconds). Pass 0 to disable timeout.
    • env <Object<string, string|number|boolean>> Specify environment variables that will be visible to the browser. Defaults to process.env.
    • devtools <boolean> Chromium-only Whether to auto-open a Developer Tools panel for each tab. If this option is true, the headless option will be set false.
    • slowMo <number> Slows down Playwright operations by the specified amount of milliseconds. Useful so that you can see what is going on. Defaults to 0.
    • ignoreHTTPSErrors <boolean> Whether to ignore HTTPS errors during navigation. Defaults to false.
    • bypassCSP <boolean> Toggles bypassing page's Content-Security-Policy.
    • viewport <null|Object> Sets a consistent viewport for each page. Defaults to an 1280x720 viewport. null disables the default viewport.
      • width <number> page width in pixels.
      • height <number> page height in pixels.
    • userAgent <string> Specific user agent to use in this context.
    • deviceScaleFactor <number> Specify device scale factor (can be thought of as dpr). Defaults to 1.
    • isMobile <boolean> Whether the meta viewport tag is taken into account and touch events are enabled. Defaults to false. Not supported in Firefox.
    • hasTouch <boolean> Specifies if viewport supports touch events. Defaults to false.
    • javaScriptEnabled <boolean> Whether or not to enable JavaScript in the context. Defaults to true.
    • timezoneId <string> Changes the timezone of the context. See ICU’s metaZones.txt for a list of supported timezone IDs.
    • geolocation <Object>
      • latitude <number> Latitude between -90 and 90.
      • longitude <number> Longitude between -180 and 180.
      • accuracy <number> Optional non-negative accuracy value. Defaults to 0.
    • locale <string> Specify user locale, for example en-GB, de-DE, etc. Locale will affect navigator.language value, Accept-Language request header value as well as number and date formatting rules.
    • permissions <Array<string>> A list of permissions to grant to all pages in this context. See browserContext.grantPermissions for more details.
    • extraHTTPHeaders <Object<string, string>> An object containing additional HTTP headers to be sent with every request. All header values must be strings.
    • offline <boolean> Whether to emulate network being offline. Defaults to false.
    • httpCredentials <Object> Credentials for HTTP authentication.
    • colorScheme <"light"|"dark"|"no-preference"> Emulates 'prefers-colors-scheme' media feature, supported values are 'light', 'dark', 'no-preference'. See page.emulateMedia(options) for more details. Defaults to 'light'.
  • returns: <Promise<BrowserContext>> Promise that resolves to the persistent browser context instance.

Launches browser that uses persistent storage located at userDataDir and returns the only context. Closing this context will automatically close the browser.

browserType.launchServer([options])

  • options <Object> Set of configurable options to set on the browser. Can have the following fields:
    • headless <boolean> Whether to run browser in headless mode. More details for Chromium and Firefox. Defaults to true unless the devtools option is true.
    • port <number> Port to use for the web socket. Defaults to 0 that picks any available port.
    • executablePath <string> Path to a browser executable to run instead of the bundled one. If executablePath is a relative path, then it is resolved relative to current working directory. BEWARE: Playwright is only guaranteed to work with the bundled Chromium, Firefox or WebKit, use at your own risk.
    • args <Array<string>> Additional arguments to pass to the browser instance. The list of Chromium flags can be found here.
    • ignoreDefaultArgs <boolean|Array<string>> If true, then do not use any of the default arguments. If an array is given, then filter out the given default arguments. Dangerous option; use with care. Defaults to false.
    • proxy <Object> Network proxy settings.
      • server <string> Proxy to be used for all requests. HTTP and SOCKS proxies are supported, for example http://myproxy.com:3128 or socks5://myproxy.com:3128. Short form myproxy.com:3128 is considered an HTTP proxy.
      • bypass <string> Optional coma-separated domains to bypass proxy, for example ".com, chromium.org, .domain.com".
      • username <string> Optional username to use if HTTP proxy requires authentication.
      • password <string> Optional password to use if HTTP proxy requires authentication.
    • downloadsPath <string> If specified, accepted downloads are downloaded into this folder. Otherwise, temporary folder is created and is deleted when browser is closed.
    • chromiumSandbox <boolean> Enable Chromium sandboxing. Defaults to true.
    • firefoxUserPrefs <Object<string, string|number|boolean>> Firefox user preferences. Learn more about the Firefox user preferences at about:config.
    • handleSIGINT <boolean> Close the browser process on Ctrl-C. Defaults to true.
    • handleSIGTERM <boolean> Close the browser process on SIGTERM. Defaults to true.
    • handleSIGHUP <boolean> Close the browser process on SIGHUP. Defaults to true.
    • logger <Logger> Logger sink for Playwright logging.
    • timeout <number> Maximum time in milliseconds to wait for the browser instance to start. Defaults to 30000 (30 seconds). Pass 0 to disable timeout.
    • env <Object<string, string|number|boolean>> Specify environment variables that will be visible to the browser. Defaults to process.env.
    • devtools <boolean> Chromium-only Whether to auto-open a Developer Tools panel for each tab. If this option is true, the headless option will be set false.
  • returns: <Promise<BrowserServer>> Promise which resolves to the browser app instance.

Launches browser server that client can connect to. An example of launching a browser executable and connecting to it later:

const { chromium } = require('playwright');  // Or 'webkit' or 'firefox'.

(async () => {
  const browserServer = await chromium.launchServer();
  const wsEndpoint = browserServer.wsEndpoint();
  // Use web socket endpoint later to establish a connection.
  const browser = await chromium.connect({ wsEndpoint });
  // Close browser instance.
  await browserServer.close();
})();

browserType.name()

Returns browser name. For example: 'chromium', 'webkit' or 'firefox'.

class: Logger

Playwright generates a lot of logs and they are accessible via the pluggable logger sink.

const { chromium } = require('playwright');  // Or 'firefox' or 'webkit'.

(async () => {
  const browser = await chromium.launch({
    logger: {
      isEnabled: (name, severity) => name === 'browser',
      log: (name, severity, message, args) => console.log(`${name} ${message}`)
    }
  });
  ...
})();

logger.isEnabled(name, severity)

  • name <string> logger name
  • severity <"verbose"|"info"|"warning"|"error">
  • returns: <boolean>

Determines whether sink is interested in the logger with the given name and severity.

logger.log(name, severity, message, args, hints)

  • name <string> logger name
  • severity <"verbose"|"info"|"warning"|"error">
  • message <string|Error> log message format
  • args <Array<Object>> message arguments
  • hints <Object> optional formatting hints
    • color <string> preferred logger color

class: ChromiumBrowser

Chromium-specific features including Tracing, service worker support, etc. You can use chromiumBrowser.startTracing and chromiumBrowser.stopTracing to create a trace file which can be opened in Chrome DevTools or timeline viewer.

await browser.startTracing(page, {path: 'trace.json'});
await page.goto('https://www.google.com');
await browser.stopTracing();

chromiumBrowser.newBrowserCDPSession()

  • returns: <Promise<CDPSession>> Promise that resolves to the newly created browser session.

chromiumBrowser.startTracing([page, options])

  • page <Page> Optional, if specified, tracing includes screenshots of the given page.
  • options <Object>
    • path <string> A path to write the trace file to.
    • screenshots <boolean> captures screenshots in the trace.
    • categories <Array<string>> specify custom categories to use instead of default.
  • returns: <Promise>

Only one trace can be active at a time per browser.

chromiumBrowser.stopTracing()

  • returns: <Promise<Buffer>> Promise which resolves to buffer with trace data.

class: ChromiumBrowserContext

Chromium-specific features including background pages, service worker support, etc.

const backgroundPage = await context.waitForEvent('backgroundpage');

event: 'backgroundpage'

Emitted when new background page is created in the context.

Note

Only works with persistent context.

event: 'serviceworker'

Emitted when new service worker is created in the context.

chromiumBrowserContext.backgroundPages()

  • returns: <Array<Page>> All existing background pages in the context.

chromiumBrowserContext.newCDPSession(page)

  • page <Page> Page to create new session for.
  • returns: <Promise<CDPSession>> Promise that resolves to the newly created session.

chromiumBrowserContext.serviceWorkers()

  • returns: <Array<Worker>> All existing service workers in the context.

class: ChromiumCoverage

Coverage gathers information about parts of JavaScript and CSS that were used by the page.

An example of using JavaScript coverage to produce Istambul report for page load:

const { chromium } = require('playwright');
const v8toIstanbul = require('v8-to-istanbul');

(async() => {
  const browser = await chromium.launch();
  const page = await browser.newPage();
  await page.coverage.startJSCoverage();
  await page.goto('https://chromium.org');
  const coverage = await page.coverage.stopJSCoverage();
  for (const entry of coverage) {
    const converter = new v8toIstanbul('', 0, { source: entry.source });
    await converter.load();
    converter.applyCoverage(entry.functions);
    console.log(JSON.stringify(converter.toIstanbul()));
  }
  await browser.close();
})();

chromiumCoverage.startCSSCoverage([options])

  • options <Object> Set of configurable options for coverage
    • resetOnNavigation <boolean> Whether to reset coverage on every navigation. Defaults to true.
  • returns: <Promise> Promise that resolves when coverage is started

chromiumCoverage.startJSCoverage([options])

  • options <Object> Set of configurable options for coverage
    • resetOnNavigation <boolean> Whether to reset coverage on every navigation. Defaults to true.
    • reportAnonymousScripts <boolean> Whether anonymous scripts generated by the page should be reported. Defaults to false.
  • returns: <Promise> Promise that resolves when coverage is started

Note

Anonymous scripts are ones that don't have an associated url. These are scripts that are dynamically created on the page using eval or new Function. If reportAnonymousScripts is set to true, anonymous scripts will have __playwright_evaluation_script__ as their URL.

chromiumCoverage.stopCSSCoverage()

  • returns: <Promise<Array<Object>>> Promise that resolves to the array of coverage reports for all stylesheets
    • url <string> StyleSheet URL
    • text <string> StyleSheet content, if available.
    • ranges <Array<Object>> StyleSheet ranges that were used. Ranges are sorted and non-overlapping.
      • start <number> A start offset in text, inclusive
      • end <number> An end offset in text, exclusive

Note

CSS Coverage doesn't include dynamically injected style tags without sourceURLs.

chromiumCoverage.stopJSCoverage()

Note

JavaScript Coverage doesn't include anonymous scripts by default. However, scripts with sourceURLs are reported.

class: CDPSession

The CDPSession instances are used to talk raw Chrome Devtools Protocol:

  • protocol methods can be called with session.send method.
  • protocol events can be subscribed to with session.on method.

Useful links:

const client = await page.context().newCDPSession(page);
await client.send('Animation.enable');
client.on('Animation.animationCreated', () => console.log('Animation created!'));
const response = await client.send('Animation.getPlaybackRate');
console.log('playback rate is ' + response.playbackRate);
await client.send('Animation.setPlaybackRate', {
  playbackRate: response.playbackRate / 2
});

cdpSession.detach()

Detaches the CDPSession from the target. Once detached, the CDPSession object won't emit any events and can't be used to send messages.

cdpSession.send(method[, params])

class: FirefoxBrowser

Firefox browser instance does not expose Firefox-specific features.

class: WebKitBrowser

WebKit browser instance does not expose WebKit-specific features.

EvaluationArgument

Playwright evaluation methods like page.evaluate(pageFunction[, arg]) take a single optional argument. This argument can be a mix of Serializable values and JSHandle or ElementHandle instances. Handles are automatically converted to the value they represent.

See examples for various scenarios:

// A primitive value.
await page.evaluate(num => num, 42);

// An array.
await page.evaluate(array => array.length, [1, 2, 3]);

// An object.
await page.evaluate(object => object.foo, { foo: 'bar' });

// A single handle.
const button = await page.$('button');
await page.evaluate(button => button.textContent, button);

// Alternative notation using elementHandle.evaluate.
await button.evaluate((button, from) => button.textContent.substring(from), 5);

// Object with multiple handles.
const button1 = await page.$('.button1');
const button2 = await page.$('.button2');
await page.evaluate(
    o => o.button1.textContent + o.button2.textContent,
    { button1, button2 });

// Obejct destructuring works. Note that property names must match
// between the destructured object and the argument.
// Also note the required parenthesis.
await page.evaluate(
    ({ button1, button2 }) => button1.textContent + button2.textContent,
    { button1, button2 });

// Array works as well. Arbitrary names can be used for destructuring.
// Note the required parenthesis.
await page.evaluate(
    ([b1, b2]) => b1.textContent + b2.textContent,
    [button1, button2]);

// Any non-cyclic mix of serializables and handles works.
await page.evaluate(
    x => x.button1.textContent + x.list[0].textContent + String(x.foo),
    { button1, list: [button2], foo: null });

Environment Variables

Note

playwright-core does not respect environment variables.

Playwright looks for certain environment variables to aid its operations. If Playwright doesn't find them in the environment, a lowercased variant of these variables will be used from the npm config.

  • PLAYWRIGHT_DOWNLOAD_HOST - overwrite URL prefix that is used to download browsers. Note: this includes protocol and might even include path prefix. By default, Playwright uses https://storage.googleapis.com to download Chromium and https://playwright.azureedge.net to download Webkit & Firefox. You can also use browser-specific download hosts that superceed the PLAYWRIGHT_DOWNLOAD_HOST variable:
    • PLAYWRIGHT_CHROMIUM_DOWNLOAD_HOST - host to specify Chromium downloads
    • PLAYWRIGHT_FIREFOX_DOWNLOAD_HOST - host to specify Firefox downloads
    • PLAYWRIGHT_WEBKIT_DOWNLOAD_HOST - host to specify Webkit downloads
  • PLAYWRIGHT_BROWSERS_PATH - specify a shared folder that playwright will use to download browsers and to look for browsers when launching browser instances.
  • PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD - set to non-empty value to skip browser downloads altogether.
# Linux/macOS
# Install browsers to the shared location.
$ PLAYWRIGHT_BROWSERS_PATH=$HOME/playwright-browsers npm install --save-dev playwright
# Use shared location to find browsers.
$ PLAYWRIGHT_BROWSERS_PATH=$HOME/playwright-browsers node playwright-script.js

# Windows
# Install browsers to the shared location.
$ set PLAYWRIGHT_BROWSERS_PATH=%USERPROFILE%\playwright-browsers
$ npm install --save-dev playwright
# Use shared location to find browsers.
$ set PLAYWRIGHT_BROWSERS_PATH=%USERPROFILE%\playwright-browsers
$ node playwright-script.js

Working with selectors

Selector describes an element in the page. It can be used to obtain ElementHandle (see page.$() for example) or shortcut element operations to avoid intermediate handle (see page.click() for example).

Selector has the following format: engine=body [>> engine=body]*. Here engine is one of the supported selector engines (e.g. css or xpath), and body is a selector body in the format of the particular engine. When multiple engine=body clauses are present (separated by >>), next one is queried relative to the previous one's result.

For convenience, selectors in the wrong format are heuristically converted to the right format:

  • selector starting with // or .. is assumed to be xpath=selector;
  • selector starting and ending with a quote (either " or ') is assumed to be text=selector;
  • otherwise selector is assumed to be css=selector.
// queries 'div' css selector
const handle = await page.$('css=div');

// queries '//html/body/div' xpath selector
const handle = await page.$('xpath=//html/body/div');

// queries '"foo"' text selector
const handle = await page.$('text="foo"');

// queries 'span' css selector inside the result of '//html/body/div' xpath selector
const handle = await page.$('xpath=//html/body/div >> css=span');

// converted to 'css=div'
const handle = await page.$('div');

// converted to 'xpath=//html/body/div'
const handle = await page.$('//html/body/div');

// converted to 'text="foo"'
const handle = await page.$('"foo"');

// queries '../span' xpath selector starting with the result of 'div' css selector
const handle = await page.$('div >> ../span');

// queries 'span' css selector inside the div handle
const handle = await divHandle.$('css=span');

Working with Chrome Extensions

Playwright can be used for testing Chrome Extensions.

Note

Extensions in Chrome / Chromium currently only work in non-headless mode.

The following is code for getting a handle to the background page of an extension whose source is located in ./my-extension:

const { chromium } = require('playwright');

(async () => {
  const pathToExtension = require('path').join(__dirname, 'my-extension');
  const userDataDir = '/tmp/test-user-data-dir';
  const browserContext = await chromium.launchPersistentContext(userDataDir,{
    headless: false,
    args: [
      `--disable-extensions-except=${pathToExtension}`,
      `--load-extension=${pathToExtension}`
    ]
  });
  const backgroundPage = browserContext.backgroundPages()[0];
  // Test the background page as you would any other page.
  await browserContext.close();
})();

Note

It is not yet possible to test extension popups or content scripts.