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
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
resolvedOptionsChrome Full support 24Edge Full support 12Firefox Full support 29IE Full support 11Opera Full support 15Safari Full support 10WebView Android Full support YesChrome Android Full support 26Firefox Android Full support 56Opera Android ? Safari iOS Full support 10Samsung Internet Android Full support 1.5nodejs ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown

See also