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Intl.NumberFormat.prototype.format

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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

Using format

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);
console.log(numberFormat.format(654321.987));
// → "654 321,99 руб."

Using format with map

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);
console.log(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.
ECMAScript Internationalization API 2.0 (ECMA-402)
The definition of 'Intl.NumberFormat.prototype.format' in that specification.
Standard  
ECMAScript Internationalization API 3.0 (ECMA-402)
The definition of 'Intl.NumberFormat.prototype.format' in that specification.
Draft  

Browser compatibility

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

See also

Etiquetas do documento e colaboradores

 Colaboradores desta página: fscholz, Mingun, Sheppy, Norbert
 Última atualização por: fscholz,