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30-seconds-of-code/js/snippets/detect-language.md
2023-05-03 20:39:23 +03:00

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---
title: Detect language
type: snippet
tags: [browser]
cover: accessibility
dateModified: 2020-10-06T18:47:16+03:00
---
Detects the preferred language of the current user.
- Use `Navigator.language` or the first value of `Navigator.languages` if available, otherwise return `defaultLang`.
- Omit the second argument, `defaultLang`, to use `'en-US'` as the default language code.
```js
const detectLanguage = (defaultLang = 'en-US') =>
navigator.language ||
(Array.isArray(navigator.languages) && navigator.languages[0]) ||
defaultLang;
```
```js
detectLanguage(); // 'nl-NL'
```