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The Intl.NumberFormat.prototype property represents the prototype object for the Intl.NumberFormat constructor.

Property attributes of Intl.NumberFormat.prototype
Writable no
Enumerable no
Configurable no


See NumberFormat for a description of Intl.NumberFormat instances.

Intl.NumberFormat instances inherit from Intl.NumberFormat.prototype. Modifications to the prototype object are inherited by all Intl.NumberFormat instances.


A reference to Intl.NumberFormat.
Getter; returns a function that formats a number according to the locale and formatting options of this NumberFormat object.


Returns a new object with properties reflecting the locale and collation options computed during initialization of the object.


Specification Status Comment
ECMAScript Internationalization API 1.0 (ECMA-402)
The definition of 'Intl.NumberFormat.prototype' in that specification.
Standard Initial definition.
ECMAScript Internationalization API 2.0 (ECMA-402)
The definition of 'Intl.NumberFormat.prototype' in that specification.
ECMAScript Internationalization API 4.0 (ECMA-402)
The definition of 'Intl.NumberFormat.prototype' in that specification.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 24 29 (29) 11 15 10
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support No support 26 56.0 (56) No support No support 10

See also

Document Tags and Contributors

 Contributors to this page: fscholz, arai, abroz, Mingun, Sheppy, Norbert
 Last updated by: fscholz,