Intl.Locale.prototype.getNumberingSystems()
Baseline Newly available
This feature works across the latest devices and browser versions. This feature might not work in older devices or browser versions. It's been available across browsers since July 2026.
The getNumberingSystems() method of Intl.Locale instances returns a list of one or more unique numbering system identifiers 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 of strings representing all numbering systems commonly used for the Locale, sorted in descending preference. 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() lists all commonly-used numbering systems 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
Browser compatibility
| Desktop | Mobile | Server | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on iOS | Samsung Internet | WebView Android | WebView on iOS | Bun | Deno | Node.js | |
getNumberingSystems |
130
99Implemented as an accessor property. |
130
99Implemented as an accessor property. |
153 |
115
85Implemented as an accessor property. |
17
15.4–previewImplemented as an accessor property. |
130
99Implemented as an accessor property. |
153 |
86
68Implemented as an accessor property. |
17
15.4Implemented as an accessor property. |
28.0
18.0Implemented as an accessor property. |
130
99Implemented as an accessor property. |
17
15.4Implemented as an accessor property. |
1.0.0 |
2.1
1.19–2.6.7Implemented as an accessor property. |
24.0.0
18.0.0Implemented as an accessor property. |
See also
© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/getNumberingSystems
