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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

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 54 48 (48) No support No support No support
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support No support No support 56.0 (56) No support No support No support

See also

Document Tags and Contributors

 Contributors to this page: fscholz, arai, nmve, Sebastianz, eduardoboucas
 Last updated by: fscholz,