在此页

• 句法
• 描述
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

Intl.ListFormat.supportedLocalesOf() method returns an array containing those of the provided locales that are supported in date and time formatting without having to fall back to the runtime's default locale.

句法

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

参数

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 .

返回值

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

描述

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 date and time formatting that the locale matching algorithm used considers a match, so that it wouldn't have to fall back to the default locale.

范例

使用 supportedLocalesOf

Assuming a runtime that supports Indonesian and German but not Balinese in date and time formatting, supportedLocalesOf returns the Indonesian and German language tags unchanged, even though pinyin collation is neither relevant to date and time 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.

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

规范

规范
Intl.ListFormat The definition of 'supportedLocalesOf()' in that specification.

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	Desktop						Mobile						Server
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet	Node.js
supportedLocalesOf	Chrome 72	Edge No	Firefox 78	IE No	Opera 60	Safari No	WebView Android 72	Chrome Android 72	Firefox Android No	Opera Android 51	Safari iOS No	Samsung Internet Android No	nodejs 13.0.0 13.0.0 部分支持 12.0.0 Before version 13.0.0, only the locale data for en-US is available by default. To make full ICU (locale) data available for versions prior to 13, see Node.js documentation on the --with-intl option and how to provide the data.

图例

完整支持

完整支持

不支持

不支持

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

见实现注意事项。

另请参阅

• Intl.ListFormat

元数据

• 最后修改： May 28, 2020

相关话题

1. 标准内置对象
2. Intl
3. 方法
   1. Intl.getCanonicalLocales()
4. 相关页面：
5. Collator
6. DateTimeFormat
7. ListFormat
8. NumberFormat
9. PluralRules
10. RelativeTimeFormat
11. 继承：
12. Object
13. 特性
    1. Object.prototype.__proto__
    2. Object.prototype.constructor
14. 方法
    1. Object.prototype.__defineGetter__()
    2. Object.prototype.__defineSetter__()
    3. Object.prototype.__lookupGetter__()
    4. Object.prototype.__lookupSetter__()
    5. Object.prototype.hasOwnProperty()
    6. Object.prototype.isPrototypeOf()
    7. Object.prototype.propertyIsEnumerable()
    8. Object.prototype.toLocaleString()
    9. Object.prototype.toSource()
    10. Object.prototype.toString()
    11. Object.prototype.valueOf()
    12. Object.setPrototypeOf()