Intl.getCanonicalLocales()

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.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Syntax

Intl.getCanonicalLocales(locales)

Parameters

locales

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

Return value

An array containing the canonical locale names.

Examples

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

Intl.getCanonicalLocales('EN_US'); 
// RangeError:'EN_US' is not a structurally valid language tag

Specifications

Browser compatibility

See also

• Intl.NumberFormat.supportedLocalesOf()
• Intl.DateTimeFormat.supportedLocalesOf()
• Intl.Collator.supportedLocalesOf()