The Intl.NumberFormat.prototype.format()
method formats a number according to the locale and formatting options of this NumberFormat
object.
numberFormat.format(number)
The format
getter function formats a number into a string according to the locale and formatting options of this NumberFormat
object.
format
Use the format
getter function 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."
format
with map
Use the format
getter function 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
. This is considered a historical artefact, as part of a convention which is no longer followed for new features, but is preserved to maintain compatibility with existing programs.
var a = [123456.789, 987654.321, 456789.123]; var numberFormat = new Intl.NumberFormat('es-ES'); var formatted = a.map(n => numberFormat.format(n)); console.log(formatted.join('; ')); // → "123.456,789; 987.654,321; 456.789,123"
Specification |
---|
ECMAScript Internationalization API (ECMA-402) The definition of 'Intl.NumberFormat.prototype.format' in that specification. |
Desktop | ||||||
---|---|---|---|---|---|---|
format |
24 | 12
|
29 | 11
|
15 | 10 |
Mobile | ||||||
---|---|---|---|---|---|---|
format |
4.4 | 25 | 56 | 14 | 10 | 1.5 |
Server | |
---|---|
format |
0.12
|
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https://wiki.developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/format