21 lines
536 B
Markdown
21 lines
536 B
Markdown
---
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title: detectLanguage
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tags: browser,intermediate
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---
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Detects the preferred language of the current user.
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- Use `NavigationLanguage.language` or the first `NavigationLanguage.languages` if available, otherwise return `defaultLang`.
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- Omit the second argument, `defaultLang`, to use `'en-US'` as the default language code.
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```js
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const detectLanguage = (defaultLang = 'en-US') =>
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navigator.language ||
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(Array.isArray(navigator.languages) && navigator.languages[0]) ||
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defaultLang;
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```
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```js
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detectLanguage(); // 'nl-NL'
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```
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