Set.prototype.clear()
Baseline
Widely available
This feature is well established and works across many devices and browser versions. Itâs been available across browsers since 2015å¹´7æ.
clear() æ¹æ³æå¾ä¸å Set ç©ä»¶ä¸ç§»é¤å
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å試ä¸ä¸
const set1 = new Set();
set1.add(1);
set1.add("foo");
console.log(set1.size);
// Expected output: 2
set1.clear();
console.log(set1.size);
// Expected output: 0
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js
mySet.clear();
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ä½¿ç¨ clear æ¹æ³
js
var mySet = new Set();
mySet.add(1);
mySet.add("foo");
mySet.size; // 2
mySet.has("foo"); // true
mySet.clear();
mySet.size; // 0
mySet.has("bar"); // false
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| Specification |
|---|
| ECMAScript® 2027 Language Specification # sec-set.prototype.clear |