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26 lines
520 B
Markdown
26 lines
520 B
Markdown
# lang
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The `lang` prop on the `<html>` element must have a valid value based on ISO country and language codes.
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#### References
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1. [axe-core, valid-lang](https://dequeuniversity.com/rules/axe/3.2/valid-lang)
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2. [ISO Language Codes](http://www.w3schools.com/tags/ref_language_codes.asp)
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3. [ISO Country Codes](http://www.w3schools.com/tags/ref_country_codes.asp)
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## Rule details
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This rule takes no arguments.
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### Succeed
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```jsx
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<html lang="en">
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<html lang="en-US">
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```
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### Fail
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```jsx
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<html>
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<html lang="foo">
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```
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