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codeql-action/node_modules/eslint-plugin-jsx-a11y/docs/rules/html-has-lang.md
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| # jsx-a11y/html-has-lang | |
| 💼 This rule is enabled in the following configs: ☑️ `recommended`, 🔒 `strict`. | |
| <!-- end auto-generated rule header --> | |
| <html> elements must have the lang prop. This rule is largely superseded by the [`lang` rule](https://github.com/jsx-eslint/eslint-plugin-jsx-a11y/blob/HEAD/docs/rules/lang.md). | |
| ## Rule details | |
| This rule takes no arguments. | |
| ### Succeed | |
| ```jsx | |
| <html lang="en"> | |
| <html lang="en-US"> | |
| <html lang={language}> | |
| ``` | |
| ### Fail | |
| ```jsx | |
| <html> | |
| ``` | |
| ## Accessibility guidelines | |
| - [WCAG 3.1.1](https://www.w3.org/WAI/WCAG21/Understanding/language-of-page) | |
| ### Resources | |
| - [axe-core, html-has-lang](https://dequeuniversity.com/rules/axe/3.2/html-has-lang) | |
| - [axe-core, html-lang-valid](https://dequeuniversity.com/rules/axe/3.2/html-lang-valid) |