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나머지 할당 (%=) - JavaScript | MDN

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나머지 할당 (%=)

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.

나머지 할당 연산자(%=)는 오른쪽 피연산자의 값으로 변수를 나눴을 때의 나머지를 다시 변수에 할당합니다.

시도해 보기

let a = 3;

console.log((a %= 2));
// Expected output: 1

console.log((a %= 0));
// Expected output: NaN

console.log((a %= "hello"));
// Expected output: NaN

구문

js
x %= y; // x = x % y

예제

나머지 할당 사용하기

js
// bar = 5
// 위와 같은 변수를 가정할 때

bar %= 2; // 1
bar %= "foo"; // NaN
bar %= 0; // NaN

명세

Specification
ECMAScript® 2026 Language Specification
# sec-assignment-operators

브라우저 호환성

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