JS Intl.PluralRules.supportedLocalesOf()

🌙
手机阅读
本文目录结构

The Intl.PluralRules.supportedLocalesOf() method returns an array containing those of the provided locales that are supported in plural formatting without having to fall back to the runtime’s default locale.

Syntax

Intl.PluralRules.supportedLocalesOf(locales[, options])

Parameters

locales

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

options

Optional. An object that may have the following property:

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.

Return value

An array of strings representing a subset of the given locale tags that are supported in plural formatting without having to fall back to the runtime’s default locale.

Description

Returns an array with a subset of the language tags provided in locales. The language tags returned are those for which the runtime supports a locale in plural formatting that the locale matching algorithm used considers a match, so that it wouldn’t have to fall back to the default locale.

Examples

Using supportedLocalesOf

Assuming a runtime that supports Indonesian and German but not Balinese in plural formatting, supportedLocalesOf returns the Indonesian and German language tags unchanged, even though pinyin collation is neither relevant to plural formatting nor used with Indonesian, and a specialized German for Indonesia is unlikely to be supported. Note the specification of the "lookup" algorithm here — a "best fit" matcher might decide that Indonesian is an adequate match for Balinese since most Balinese speakers also understand Indonesian, and therefore return the Balinese language tag as well.

var locales = ['ban', 'id-u-co-pinyin', 'de-ID'];
var options = { localeMatcher: 'lookup' };
console.log(Intl.PluralRules.supportedLocalesOf(locales, options).join(', '));
// → "id-u-co-pinyin, de-ID"

Specifications

Specification Status Comment
Intl Plural Rules Draft Draft Initial definition

See also


AXIHE / 精选资源

浏览全部教程

面试题

学习网站

前端培训
自己甄别

前端书籍

关于朱安邦

我叫 朱安邦,阿西河的站长,在杭州。

以前是一名平面设计师,后来开始接接触前端开发,主要研究前端技术中的JS方向。

业余时间我喜欢分享和交流自己的技术,欢迎大家关注我的 Bilibili

关注我: Github / 知乎

目前重心已经放在研究区块链上面了

我叫朱安邦,阿西河的站长

目前在杭州从事区块链周边的开发工作,机械专业,以前从事平面设计工作。

2014年底脱产在老家自学6个月的前端技术,自学期间几乎从未出过家门,最终找到了满意的前端工作。更多>