jsx-a11y/lang

October 27, 2022 ยท View on GitHub

The lang prop on the <html> element must be a valid IETF's BCP 47 language tag.

Rule details

This rule takes no arguments.

Succeed

<html lang="en">
<html lang="en-US">

Fail

<html>
<html lang="foo">

Accessibility guidelines

  • WCAG 3.1.1

Resources

  • axe-core, valid-lang
  • Language tags in HTML and XML
  • IANA Language Subtag Registry

Contents

  1. 1Rule details
  2. 1.1Succeed
  3. 1.2Fail
  4. 2Accessibility guidelines
  5. 2.1Resources