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 Intl/NumberFormat object.

Syntax

resolvedOptions()

Return value

A new object with properties reflecting the locale and number formatting options computed during the initialization of the given Intl/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
ECMAScript Internationalization API Specification (ECMAScript Internationalization API)
# sec-intl.numberformat.prototype.resolvedoptions

Browser compatibility

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See also