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# language

A language ID that determines the language to use for displaying addresses.

```
get language(): string | null;
set language(value: string | null);
```

## Discussion

When you set the [`language`](/documentation/MapKitJS/Service/language) property to a language ID (such as `fr-CA` or `en-GB`), the service returns results in this language, if available. If [`language`](/documentation/MapKitJS/Service/language) isn’t set when initializing a [`Service`](/documentation/MapKitJS/Service) object, then the service uses the language you provided when you initialized MapKit.

The default value is `null`. The language can be unset by setting [`language`](/documentation/MapKitJS/Service/language) to `null` or `undefined`.

---

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