Map.prototype.clear()
Baseline
Widely available
This feature is well established and works across many devices and browser versions. Itโs been available across browsers since โจ2015๋ 7์โฉ.
Map์ clear() ๋ฉ์๋๋ ํด๋น Map์ ๋ชจ๋ ์์๋ฅผ ์ ๊ฑฐํฉ๋๋ค.
์๋ํด ๋ณด๊ธฐ
const map1 = new Map();
map1.set("bar", "baz");
map1.set(1, "foo");
console.log(map1.size);
// Expected output: 2
map1.clear();
console.log(map1.size);
// Expected output: 0
๊ตฌ๋ฌธ
js
clear()
๋งค๊ฐ๋ณ์
์์.
๋ฐํ ๊ฐ
์์(undefined).
์์
clear() ์ฌ์ฉํ๊ธฐ
js
const myMap = new Map();
myMap.set("bar", "baz");
myMap.set(1, "foo");
console.log(myMap.size); // 2
console.log(myMap.has("bar")); // true
myMap.clear();
console.log(myMap.size); // 0
console.log(myMap.has("bar")); // false
๋ช ์ธ์
| Specification |
|---|
| ECMAScriptยฎ 2026 Language Specification # sec-map.prototype.clear |
๋ธ๋ผ์ฐ์ ํธํ์ฑ
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