Web/JavaScript/Reference/Global objects/Object/toLocaleString

The toLocaleString() method returns a string representing the object. This method is meant to be overridden by derived objects for locale-specific purposes.

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

Syntax

obj.toLocaleString()

Return value

A string representing the object.

Description

Object's toLocaleString returns the result of calling toString().

This function is provided to give objects a generic toLocaleString method, even though not all may use it. See the list below.

Objects overriding toLocaleString

• Array: Array.prototype.toLocaleString()
• Number: Number.prototype.toLocaleString()
• Date: Date.prototype.toLocaleString()
• TypedArray: TypedArray.prototype.toLocaleString()
• BigInt: BigInt.prototype.toLocaleString()

Examples

Array toLocaleString() override

On Array objects, toLocaleString() can be used to print array values as a string, optionally with locale-specific identifiers (such as currency symbols) appended to them:

For example:

const testArray = [4, 7, 10];

let euroPrices = testArray.toLocaleString('fr', { style: 'currency', currency: 'EUR'});
// "4,00 €,7,00 €,10,00 €"

Date toLocaleString() override

On Date objects, toLocaleString() is used to print out date displays more suitable for specific locales:

For example:

const testDate = new Date(Date.now());
// "Date Fri May 29 2020 18:04:24 GMT+0100 (British Summer Time)"

let deDate = testDate.toLocaleString('de');
// "29.5.2020, 18:04:24"

var frDate = testDate.toLocaleString('fr');
//"29/05/2020 à 18:04:24"

Number toLocaleString() override

On Number objects, toLocaleString() is used to print out number displays more suitable for specific locales, e.g. with the correct separators:

For example:

const testNumber = 2901234564;
// "2901234564"

let deNumber = testNumber.toLocaleString('de');
// "2.901.234.564"

let frNumber = testNumber.toLocaleString('fr');
// "2 901 234 564"

Specifications

Specification
ECMAScript (ECMA-262)The definition of 'Object.prototype.toLocaleString' in that specification.

Browser compatibility

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Update compatibility data on GitHub

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
toLocaleString	Chrome Full support 1	Edge Full support 12	Firefox Full support 1	IE Full support 5.5	Opera Full support 4	Safari Full support 1	WebView Android Full support 1	Chrome Android Full support 18	Firefox Android Full support 4	Opera Android Full support 10.1	Safari iOS Full support 1	Samsung Internet Android Full support 1.0	nodejs Full support Yes

Legend

Full support  

Full support

See also

• Object.prototype.toString()

Object.prototype.toLocaleString() by Mozilla Contributors is licensed under CC-BY-SA 2.5.