在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

entries() method returns a new Iterator object that contains an array of [value, value] for each element in the Set object, in insertion order. For Set objects there is no key like in Map objects. However, to keep the API similar to the Map object, each entry has the same value for its key and value here, so that an array [value, value] 被返回。

The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.

句法

mySet.entries()
					

返回值

A new Iterator object that contains an array of [value, value] for each element in the given Set , in insertion order.

范例

Using entries()

var mySet = new Set();
mySet.add('foobar');
mySet.add(1);
mySet.add('baz');
var setIter = mySet.entries();
console.log(setIter.next().value); // ["foobar", "foobar"]
console.log(setIter.next().value); // [1, 1]
console.log(setIter.next().value); // ["baz", "baz"]
					

规范

规范
ECMAScript (ECMA-262) The definition of 'Set.prototype.entries' 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
entries	Chrome 38	Edge 12	Firefox 24	IE No	Opera 25	Safari 8	WebView Android 38	Chrome Android 38	Firefox Android 24	Opera Android 25	Safari iOS 8	Samsung Internet Android 3.0	nodejs 0.12

图例

完整支持

完整支持

不支持

不支持

另请参阅

• Set.prototype.keys()
• Set.prototype.values()

元数据

• 最后修改： Aug 17, 2020

相关话题

1. 标准内置对象
2. Set
3. 特性
   1. Set.prototype.size
   2. get Set[@@species]
4. 方法
   1. Set.prototype.add()
   2. Set.prototype.clear()
   3. Set.prototype.delete()
   4. Set.prototype.entries()
   5. Set.prototype.forEach()
   6. Set.prototype.has()
   7. Set.prototype.values()
   8. Set.prototype[@@iterator]()
5. 继承：
6. Function
7. 特性
   1. Function.arguments
   2. Function.caller
   3. Function.displayName
   4. Function.length
   5. Function.name
8. 方法
   1. Function.prototype.apply()
   2. Function.prototype.bind()
   3. Function.prototype.call()
   4. Function.prototype.toSource()
   5. Function.prototype.toString()
9. Object
10. 特性
    1. Object.prototype.__proto__
    2. Object.prototype.constructor
11. 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()