The Intl.getCanonicalLocales() method returns an array containing the canonical locale names. Duplicates will be omitted and elements will be validated as structurally valid language tags.




A list of String values for which to get the canonical locale names.

Return value

An array containing the canonical locale names.


Intl.getCanonicalLocales('EN-US'); // ["en-US"]
Intl.getCanonicalLocales(['EN-US', 'Fr']); // ["en-US", "fr"]

// RangeError:'EN_US' is not a structurally valid language tag


Specification Status Comment
ECMAScript Internationalization API 4.0 (ECMA-402)
The definition of 'Intl.getCanonicalLocales' in that specification.
Draft Initial definition

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
getCanonicalLocalesChrome Full support 54Edge Full support 16Firefox Full support 48IE No support NoOpera No support NoSafari Full support 11WebView Android No support NoChrome Android No support NoEdge Mobile No support NoFirefox Android Full support 56Opera Android No support NoSafari iOS Full support 11Samsung Internet Android No support Nonodejs No support No


Full support  
Full support
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No support

See also

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