---
title: Code Blocks
description: Style for code blocks in documentation
keywords:
  - hasura
  - style
  - code blocks
slug: code-blocks
---

# Code Blocks

* All code blocks should be indented 2 spaces by default.
* Order fields for greater understanding.
* Remove parts of code if necessary in order to provide the greatest clarity to the user.
* Use only mandatory fields to keep examples concise.
* Use MDX [code block highlighting](https://docusaurus.io/docs/markdown-features/code-blocks#line-highlighting) to
  draw the user's attention to which lines the user should focus on.
* Show incorrect methods and common errors to improve the user's understanding but make sure they are very well
  highlighted as incorrect.
* Use single quotes instead of double quotes except where necessary eg: JSON
* Arrays in code should be split onto multiple lines, unless there is only one member of the array.
* When specifying code for the Hasura API, you can use either `curl` or an `http` block depending on whichever is
  clearer for the user.

### HTTP

* All HTTP headers must begin with `First-Letter-Capitalized-Like-This`.
* HTTP blocks should run without changes if they are pasted into Postman, for example.

### Javascript

* Use semicolons `;` at the end of statements.
* Use single quotes instead of double quotes.

### JSON

* Indent 2 spaces.
* Do not include comments in JSON

### Shell

* Specify `bash` as code type for shell commands.
* Try to break separate commands into separate code blocks or else chain commands with `&&` or break into multi-line
  with `\`.
* Shell commands can include comments _before_ the command prefixed with `#`.
* If you would like to include output of the command, add it in a new block with `text` type.

### YAML

* YAML should always be indented by 2 spaces as per the spec.
* Include only the relevant part of the code if it provides more clarity to the user. Indicate ommitted lines with
`...`