---
category: Sensors
---

# useNavigatorLanguage

Reactive [navigator.language](https://developer.mozilla.org/en-US/docs/Web/API/Navigator/language).

## Usage

```ts
import { useNavigatorLanguage } from '@vueuse/core';

const { language } = useNavigatorLanguage();

watch(language, () => {
  // Listen to the value changing
});
```

## Type Declarations

```ts
export interface NavigatorLanguageState {
  isSupported: ComputedRef<boolean>;
  /**
   *
   * ISO 639-1 standard Language Code
   *
   * @info The detected user agent language preference as a language tag
   * (which is sometimes referred to as a "locale identifier").
   * This consists of a 2-3 letter base language tag that indicates a
   * language, optionally followed by additional subtags separated by
   * '-'. The most common extra information is the country or region
   * variant (like 'en-US' or 'fr-CA').
   *
   *
   * @see https://www.iso.org/iso-639-language-codes.html
   * @see https://www.loc.gov/standards/iso639-2/php/code_list.php
   *
   */
  language: ShallowRef<string | undefined>;
}
/**
 *
 * Reactive useNavigatorLanguage
 *
 * Detects the currently selected user language and returns a reactive language
 * @see https://vueuse.org/useNavigatorLanguage
 *
 * @__NO_SIDE_EFFECTS__
 */
export declare function useNavigatorLanguage(
  options?: ConfigurableWindow,
): Readonly<NavigatorLanguageState>;
export type UseNavigatorLanguageReturn = ReturnType<typeof useNavigatorLanguage>;
```
