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entries() ?方法返回一个新的包含 [key, value] ?对的 Iterator ?对象,返回的迭代器的迭代顺序与 Map 对象的插入顺序相同。

语法

myMap.entries()

示例

entries() 的使用

var myMap = new Map();
myMap.set("0", "foo");
myMap.set(1, "bar");
myMap.set({}, "baz");

var mapIter = myMap.entries();

console.log(mapIter.next().value); // ["0", "foo"]
console.log(mapIter.next().value); // [1, "bar"]
console.log(mapIter.next().value); // [Object, "baz"]

规范

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
Map.prototype.entries
Standard Initial definition.

浏览器兼容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 38 20 (20) 未实现 25 7.1
Feature Android Chrome for Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support 未实现 38 (Yes) 20.0 (20) 未实现 未实现 8

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