Intl.Locale.prototype.getNumberingSystems()
Baseline 2026
Newly available
Since July 2026, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
The getNumberingSystems() method of Intl.Locale instances returns an array containing a single numbering system identifier for this locale.
Note:
In some versions of some browsers, this method was implemented as an accessor property called numberingSystems. However, because it returns a new array on each access, it is now implemented as a method to prevent the situation of locale.numberingSystems === locale.numberingSystems returning false. Check the browser compatibility table for details.
Syntax
getNumberingSystems()
Parameters
None.
Return value
An array containing a single string representing the default numbering system for the Locale. If the Locale already has a numberingSystem, then the returned array contains that single value.
For a list of supported numbering system types, see Intl.supportedValuesOf().
Examples
Obtaining supported numbering systems
If the Locale object doesn't have a numberingSystem already, getNumberingSystems() returns the default numbering system for the given Locale. For examples of explicitly setting a numberingSystem, see numberingSystem examples.
const arEG = new Intl.Locale("ar-EG");
console.log(arEG.getNumberingSystems()); // ["arab"]
const ja = new Intl.Locale("ja");
console.log(ja.getNumberingSystems()); // ["latn"]
Specifications
| Specification |
|---|
| Intl Locale Info Proposal # sec-Intl.Locale.prototype.getNumberingSystems |