Intl.NumberFormat.prototype.resolvedOptions()

The Intl.NumberFormat.prototype.resolvedOptions() method returns a new object with properties reflecting the locale and number formatting options computed during initialization of this NumberFormat object.

Syntax

numberFormat.resolvedOptions()

Return value

A new object with properties reflecting the locale and number formatting options computed during the initialization of the given NumberFormat object.

Description

The resulting object has the following properties:

locale
The BCP 47 language tag for the locale actually used. If any Unicode extension values were requested in the input BCP 47 language tag that led to this locale, the key-value pairs that were requested and are supported for this locale are included in locale.
numberingSystem
The value provided for this properties in the  options argument, if present, or the value requested using the Unicode extension key "nu" or filled in as a default.
notation
The value provided for this property in the  options argument, if present, or "standard filled in as a default.
compactDisplay
The value provided for this property in the  options argument, or "short" filled in as a default. 
This property is only present if the notation is set to "compact". 
signDisplay
The value provided for this property in the  options argument, or "auto" filled in as a default. 
useGrouping
The values provided for these properties in the options argument or filled in as defaults.
currency
currencyDisplay
The values provided for these properties in the options argument or filled in as defaults. These properties are only present if style is "currency".

Only one of the following two groups of properties is included:

minimumIntegerDigits
minimumFractionDigits
maximumFractionDigits
The values provided for these properties in the options argument or filled in as defaults. These properties are present only if neither minimumSignificantDigits nor maximumSignificantDigits was provided in the options argument.
minimumSignificantDigits
maximumSignificantDigits
The values provided for these properties in the options argument or filled in as defaults. These properties are present only if at least one of them was provided in the options argument.

Examples

Using the resolvedOptions method

var de = new Intl.NumberFormat('de-DE');
var usedOptions = de.resolvedOptions();

usedOptions.locale;                // "de-DE"
usedOptions.numberingSystem;       // "latn"
usedOptions.notation;              // "standard"
usedOptions.signDisplay;           // "auto"
usedOption.style;                  // "decimal"
usedOptions.minimumIntegerDigits;  // 1
usedOptions.minimumFractionDigits; // 0
usedOptions.maximumFractionDigits; // 3
usedOptions.useGrouping;           // true

Specifications

Specification Status Comment
ECMAScript Internationalization API 1.0 (ECMA-402)
The definition of 'Intl.NumberFormat.prototype.resolvedOptions' in that specification.
Standard Initial definition.
ECMAScript Internationalization API 2.0 (ECMA-402)
The definition of 'Intl.NumberFormat.prototype.resolvedOptions' in that specification.
Standard
ECMAScript Internationalization API 4.0 (ECMA-402)
The definition of 'Intl.NumberFormat.prototype.resolvedOptions' in that specification.
Draft

Browser compatibility

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
resolvedOptions Chrome Full support 24 Edge Full support 12 Firefox Full support 29 IE Full support 11 Opera Full support 15 Safari Full support 10 WebView Android Full support Yes Chrome Android Full support 26 Firefox Android Full support 56 Opera Android ? Safari iOS Full support 10 Samsung Internet Android Full support 1.5 nodejs ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown

See also