Intl.ListFormat.prototype.resolvedOptions()

The resolvedOptions() method of Intl.ListFormat instances returns a new object with properties reflecting the options computed during initialization of this ListFormat object.

Try it

const deListFormatter = new Intl.ListFormat("de-DE", { type: "disjunction" });
const options = deListFormatter.resolvedOptions();

console.log(options.locale);
// Expected output: "de-DE"

console.log(options.style);
// Expected output: "long"

console.log(options.type);
// Expected output: "disjunction"

Syntax

resolvedOptions()

Parameters

None.

Return value

A new object with properties reflecting the options computed during the initialization of this ListFormat object. The object has the following properties, in the order they are listed:

locale: The BCP 47 language tag for the locale actually used, determined by the locale negotiation process. No Unicode extension key will be included in the output.
type: The value provided for this property in the options argument, with default filled in as needed. It is either "conjunction", "disjunction", or "unit". The default is "conjunction".
style: The value provided for this property in the options argument, with default filled in as needed. It is either "long", "short", or "narrow". The default is "long".

Examples

undefined

Using resolvedOptions

const deListFormatter = new Intl.ListFormat("de-DE", { style: "short" });

const usedOptions = de.resolvedOptions();
console.log(usedOptions.locale); // "de-DE"
console.log(usedOptions.style); // "short"
console.log(usedOptions.type); // "conjunction" (the default value)

Specifications

ECMAScript® 2027 Internationalization API Specification