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    Intl.NumberFormat.prototype.format

    Summary

    The Intl.NumberFormat.prototype.format property returns a getter function that formats a number according to the locale and formatting options of this NumberFormat object.

    Syntax

    numberFormat.format(number)

    Parameters

    number
    The number to format.

    Description

    The function returned by the format getter formats a number into a string according to the locale and formatting options of this NumberFormat object.

    Examples

    Use the function returned by the format getter for formatting a single currency value, here for Russia:

    var options = {style: "currency", currency: "RUB"};
    var numberFormat = new Intl.NumberFormat("ru-RU", options);
    alert(numberFormat.format(654321.987));
    // → "654 321,99 руб."

    Use the function returned by the format getter for formatting all numbers in an array. Note that the function is bound to the NumberFormat from which it was obtained, so it can be passed directly to Array.prototype.map.

    var a = [123456.789, 987654.321, 456789.123];
    var numberFormat = new Intl.NumberFormat("es-ES");
    var formatted = a.map(numberFormat.format);
    alert(formatted.join("; "));
    // → "123.456,789; 987.654,321; 456.789,123"

    Specifications

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

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
    Basic support 24 29 (29) 11 15 Not supported
    Feature Android Chrome for Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
    Basic support Not supported 26 Not supported
    bug 864843
    Not supported Not supported Not supported

    See also

    Document Tags and Contributors

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