Set.prototype.keys()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
语法
js
keys()
参数
无。
返回值
一个新的可迭代迭代器对象。
示例
使用 keys()
keys() 方法完全等价于 values() 方法。
js
const mySet = new Set();
mySet.add("foo");
mySet.add("bar");
mySet.add("baz");
const setIter = mySet.keys();
console.log(setIter.next().value); // "foo"
console.log(setIter.next().value); // "bar"
console.log(setIter.next().value); // "baz"
规范
| Specification |
|---|
| ECMAScript® 2025 Language Specification # sec-set.prototype.keys |
浏览器兼容性
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