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Intl.DurationFormat.prototype.resolvedOptions()

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The resolvedOptions() method of Intl.DurationFormat instances returns a new object with properties reflecting the locale and date and time formatting options computed during initialization of this Intl.DurationFormat object.

Syntax

js
resolvedOptions()

Parameters

None.

Return value

A new object with properties reflecting the locale and date and time formatting options computed during the initialization of the given Intl.DateTimeFormat object.

Description

The resulting object has the following properties:

locale

The BCP 47 language tag for the locale 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.

style

One of the strings "long", "short", "narrow", or "digital" identifying the duration formatting style used.

years

One of the strings "long", "short", or "narrow" identifying the formatting style used for the years field.

yearsDisplay

One of the strings "auto" or "always" identifying when to display the years field.

months

One of the strings "long", "short", and "narrow" identifying the formatting style used for the months field.

monthsDisplay

One of the strings "auto" or "always" identifying when to display the months field.

weeks

One of the strings "long", "short", and "narrow" identifying the formatting style used for the weeks field.

weeksDisplay

One of the strings "auto" or "always" identifying when to display the weeks field.

days

One of the strings "long", "short", and "narrow" identifying the formatting style used for the days field.

daysDisplay

One of the strings "auto" or "always" identifying when to display the days field.

hours

One of the strings "long", "short", "narrow", "2-digit", or "numeric" identifying the formatting style used for the hours field.

hoursDisplay

One of the strings "auto" or "always" identifying when to display the hours field.

minutes

One of the strings "long", "short", "narrow", "2-digit", or "numeric" identifying the formatting style used for the minutes field.

minutesDisplay

One of the strings "auto" or "always" identifying when to display the minutes field.

seconds

One of the strings "long", "short", "narrow", "2-digit", or "numeric" identifying the formatting style used for the seconds field.

secondsDisplay

One of the strings "auto" or "always" identifying when to display the seconds field.

milliseconds

One of the strings "long", "short", "narrow", or "numeric" identifying the formatting style used for the milliseconds field.

millisecondsDisplay

One of the strings "auto" or "always" identifying when to display the millisecondsDisplay field.

microseconds

One of the strings "long", "short", "narrow", or "numeric" identifying the formatting style used for the microseconds field.

microsecondsDisplay

One of the strings "auto" or "always" identifying when to display the microsecondsDisplay field.

nanoseconds

One of the strings "long", "short", "narrow", or "numeric" identifying the formatting style used for the nanoseconds field.

nanosecondsDisplay

One of the strings "auto" or "always" identifying when to display the nanosecondsDisplay field.

fractionalDigits

A number, identifying the number of fractional digits used with numeric styles.

numberingSystem

The value provided for this property in the options argument, if present, or the value requested using the Unicode extension key nu or filled in as a default.

Examples

Using the resolvedOptions method

js
const duration = new Intl.DurationFormat("en");
const usedOptions = duration.resolvedOptions();

usedOptions.locale; // "en"
usedOptions.numberingSystem; // "latn"
usedOptions.years; // "long"
usedOptions.yearsDisplay; // "auto"
usedOptions.style; // "long"

Specifications

Browser compatibility

Desktop Mobile Server
Chrome Edge Firefox Opera Safari Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet WebView Android Deno Node.js
resolvedOptions No No No No 16.4 No No No 16.4 No No No No

See also

© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/DurationFormat/resolvedOptions