---
title: 빼기 할당 (-=)
slug: Web/JavaScript/Reference/Operators/Subtraction_assignment
tags:
  - Assignment operator
  - JavaScript
  - Language feature
  - Operator
  - Reference
browser-compat: javascript.operators.subtraction_assignment
translation_of: Web/JavaScript/Reference/Operators/Subtraction_assignment
---

<div>{{jsSidebar("Operators")}}</div>

<p>빼기 할당 연산자(<code>-=</code>)는 오른쪽 피연산자의 값을 변수에서 뺀 결과를 다시 변수에 할당합니다.</p>

<div>{{EmbedInteractiveExample("pages/js/expressions-subtraction-assignment.html")}}</div>

<h2 id="syntax">구문</h2>

<pre class="brush: js">x -= y // x = x - y</pre>

<h2 id="examples">예제</h2>

<h3 id="using_subtraction_assignment">빼기 할당 사용하기</h3>

<pre class="brush: js">
// bar = 5
// 위와 같은 변수를 가정할 때

bar -= 2     // 3
bar -= 'foo' // NaN
</pre>

<h2 id="specifications">명세</h2>

{{Specifications}}

<h2 id="browser_compatibility">브라우저 호환성</h2>

<p>{{Compat}}</p>

<h2 id="see_also">같이 보기</h2>

<ul>
  <li>
    <a href="/ko/docs/Web/JavaScript/Guide/Expressions_and_Operators#assignment">JavaScript 안내서의 할당 연산자</a>
  </li>
  <li><a href="/ko/docs/Web/JavaScript/Reference/Operators/Subtraction">빼기 연산자</a></li>
</ul>