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번역 작업 진행중입니다.

{{JSRef}}

Intl.NumberFormat 객체는 언어에 민감한 숫자 포맷을 사용하도록 하는 객체 생성자 입니다.

{{EmbedInteractiveExample("pages/js/intl-numberformat.html")}}

Syntax

new Intl.NumberFormat([locales[, options]])
Intl.NumberFormat.call(this[, locales[, options]])

Parameters

locales

추가요소 입니다. BCP 47 언어 태그가 있는 문자열, 또는 이러한 문자열의 배열을 말합니다. 로케일 인수에 대한 일반적인 형식 및 해석은 {{jsxref ( "Intl", "Intl page", "#Locale_identification_and_negotiation", 1}}}을 참조하세요. 다음의 Unicode 확장 키가 허용됩니다:

nu
사용할 번호를 매기는 시스템입니다. 다음과 같은 사용가능 값 들이 있습니다: "arab", "arabext", "bali", "beng", "deva", "fullwide", "gujr", "guru", "hanidec", "khmr", "knda", "laoo", "latn", "limb", "mlym", "mong", "mymr", "orya", "tamldec", "telu", "thai", "tibt".
options

추가요소 입니다. 다음 프로퍼티의 일부 또는 전체를 가지는 객체는 다음과 같습니다:

localeMatcher
The locale matching algorithm to use. Possible values are "lookup" and "best fit"; the default is "best fit". For information about this option, see the {{jsxref("Global_Objects/Intl", "Intl page", "#Locale_negotiation", 1)}}.
style
The formatting style to use. Possible values are "decimal" for plain number formatting, "currency" for currency formatting, and "percent" for percent formatting; the default is "decimal".
currency
The currency to use in currency formatting. Possible values are the ISO 4217 currency codes, such as "USD" for the US dollar, "EUR" for the euro, or "CNY" for the Chinese RMB — see the Current currency & funds code list. There is no default value; if the style is "currency", the currency property must be provided.
currencyDisplay
How to display the currency in currency formatting. Possible values are "symbol" to use a localized currency symbol such as €, "code" to use the ISO currency code, "name" to use a localized currency name such as "dollar"; the default is "symbol".
useGrouping
Whether to use grouping separators, such as thousands separators or thousand/lakh/crore separators. Possible values are true and false; the default is true.

The following properties fall into two groups: minimumIntegerDigits, minimumFractionDigits, and maximumFractionDigits in one group, minimumSignificantDigits and maximumSignificantDigits in the other. If at least one property from the second group is defined, then the first group is ignored.

minimumIntegerDigits
The minimum number of integer digits to use. Possible values are from 1 to 21; the default is 1.
minimumFractionDigits
The minimum number of fraction digits to use. Possible values are from 0 to 20; the default for plain number and percent formatting is 0; the default for currency formatting is the number of minor unit digits provided by the ISO 4217 currency code list (2 if the list doesn't provide that information).
maximumFractionDigits
The maximum number of fraction digits to use. Possible values are from 0 to 20; the default for plain number formatting is the larger of minimumFractionDigits and 3; the default for currency formatting is the larger of minimumFractionDigits and the number of minor unit digits provided by the ISO 4217 currency code list (2 if the list doesn't provide that information); the default for percent formatting is the larger of minimumFractionDigits and 0.
minimumSignificantDigits
The minimum number of significant digits to use. Possible values are from 1 to 21; the default is 1.
maximumSignificantDigits
The maximum number of significant digits to use. Possible values are from 1 to 21; the default is 21.

Description

Properties

{{jsxref("NumberFormat.prototype", "Intl.NumberFormat.prototype")}}
Allows the addition of properties to all objects.

Methods

{{jsxref("NumberFormat.supportedLocalesOf", "Intl.NumberFormat.supportedLocalesOf()")}}
Returns an array containing those of the provided locales that are supported without having to fall back to the runtime's default locale.

NumberFormat instances

Properties

NumberFormat instances inherit the following properties from their prototype:

{{page('/en-US/docs/Web/JavaScript/Reference/Global_Objects/NumberFormat/prototype', 'Properties')}}

Methods

NumberFormat instances inherit the following methods from their prototype:

{{page('/en-US/docs/Web/JavaScript/Reference/Global_Objects/NumberFormat/prototype', 'Methods')}}

Examples

Basic usage

In basic use without specifying a locale, a formatted string in the default locale and with default options is returned.

var number = 3500;

console.log(new Intl.NumberFormat().format(number));
// → '3,500' if in US English locale

Using locales

This example shows some of the variations in localized number formats. In order to get the format of the language used in the user interface of your application, make sure to specify that language (and possibly some fallback languages) using the locales argument:

var number = 123456.789;

// German uses comma as decimal separator and period for thousands
console.log(new Intl.NumberFormat('de-DE').format(number));
// → 123.456,789

// Arabic in most Arabic speaking countries uses real Arabic digits
console.log(new Intl.NumberFormat('ar-EG').format(number));
// → ١٢٣٤٥٦٫٧٨٩

// India uses thousands/lakh/crore separators
console.log(new Intl.NumberFormat('en-IN').format(number));
// → 1,23,456.789

// the nu extension key requests a numbering system, e.g. Chinese decimal
console.log(new Intl.NumberFormat('zh-Hans-CN-u-nu-hanidec').format(number));
// → 一二三,四五六.七八九

// when requesting a language that may not be supported, such as
// Balinese, include a fallback language, in this case Indonesian
console.log(new Intl.NumberFormat(['ban', 'id']).format(number));
// → 123.456,789

Using options

The results can be customized using the options argument:

var number = 123456.789;

// request a currency format
console.log(new Intl.NumberFormat('de-DE', { style: 'currency', currency: 'EUR' }).format(number));
// → 123.456,79 €

// the Japanese yen doesn't use a minor unit
console.log(new Intl.NumberFormat('ja-JP', { style: 'currency', currency: 'JPY' }).format(number));
// → ¥123,457

// limit to three significant digits
console.log(new Intl.NumberFormat('en-IN', { maximumSignificantDigits: 3 }).format(number));
// → 1,23,000

Specifications

Specification Status Comment
{{SpecName('ES Int 1.0', '#sec-11.1', 'Intl.NumberFormat')}} {{Spec2('ES Int 1.0')}} Initial definition.
{{SpecName('ES Int 2.0', '#sec-11.1', 'Intl.NumberFormat')}} {{Spec2('ES Int 2.0')}}  
{{SpecName('ES Int Draft', '#numberformat-objects', 'Intl.NumberFormat')}} {{Spec2('ES Int Draft')}}  

Browser compatibility

{{Compat("javascript.builtins.Intl.NumberFormat")}}

See also

{{page('/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl', 'See_also')}}

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