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 July 2015.
Map
의 clear()
메서드는 해당 Map의 모든 요소를 제거합니다.
시도해보기
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
구문
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); // 2
console.log(myMap.has("bar")); // true
myMap.clear();
console.log(myMap.size); // 0
console.log(myMap.has("bar")); // false
명세서
Specification |
---|
ECMAScript® 2025 Language Specification # sec-map.prototype.clear |
브라우저 호환성
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clear |
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- Full support
- Full support
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