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Map.prototype.clear()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015년 7월.
Map의clear() 메서드는 해당 Map의 모든 요소를 제거합니다.
시도해 보기
const map1 = new Map();map1.set("bar", "baz");map1.set(1, "foo");console.log(map1.size);// Expected output: 2map1.clear();console.log(map1.size);// Expected output: 0구문
js
clear()매개변수
없음.
반환 값
없음(undefined).
예제
clear() 사용하기
js
const myMap = new Map();myMap.set("bar", "baz");myMap.set(1, "foo");console.log(myMap.size); // 2console.log(myMap.has("bar")); // truemyMap.clear();console.log(myMap.size); // 0console.log(myMap.has("bar")); // false명세서
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-map.prototype.clear |