빼기 할당 (-=)
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.
빼기 할당 연산자(-=
)는 오른쪽 피연산자의 값을 변수에서 뺀 결과를 다시 변수에 할당합니다.
시도해보기
let a = 2;
console.log((a -= 3));
// Expected output: -1
console.log((a -= "Hello"));
// Expected output: NaN
구문
js
x -= y; // x = x - y
예제
빼기 할당 사용하기
js
// bar = 5
// 위와 같은 변수를 가정할 때
bar -= 2; // 3
bar -= "foo"; // NaN
명세
Specification |
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ECMAScript® 2025 Language Specification # sec-assignment-operators |
브라우저 호환성
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
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Subtraction assignment ( x -= y ) |
Legend
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- Full support
- Full support
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.