Intl.ListFormat() constructor

The Intl.ListFormat() constructor creates objects that enable language-sensitive list formatting.

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Syntax

new Intl.ListFormat([locales[, options]])

Parameters

locales

Optional. A string with a BCP 47 language tag, or an array of such strings. For the general form and interpretation of the locales argument, see the Intl page.

options

Optional. An object with some or all of the following properties:

• localeMatcher
  The locale matching algorithm to use. Possible values are "lookup" and "best fit"; the default is "best fit". For information about this option, see the Intl page.
• type
  The format of output message. Possible values are "conjunction" that stands for "and"-based lists (default, e.g., A, B, and C), or "disjunction" that stands for "or"-based lists (e.g., A, B, or C). "unit" stands for lists of values with units (e.g., 5 pounds, 12 ounces).
• style
  The length of the formated message. Possible values are: "long" (default, e.g., A, B, and C); "short" (e.g., A, B, C), or "narrow" (e.g., A B C). When style is short or narrow, unit is the only allowed value for the type option.

Examples

Using format

The following example shows how to create a List formatter using the English language.

const list = ['Motorcycle', 'Bus', 'Car'];

 console.log(new Intl.ListFormat('en-GB', { style: 'long', type: 'conjunction' }).format(list));
// > Motorcycle, Bus and Car

 console.log(new Intl.ListFormat('en-GB', { style: 'short', type: 'disjunction' }).format(list));
// > Motorcycle, Bus or Car

 console.log(new Intl.ListFormat('en-GB', { style: 'narrow', type: 'unit' }).format(list));
// > Motorcycle Bus Car

Specifications

Browser compatibility

See also

• Intl