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---
title: 按位异或赋值 (^=)
slug: Web/JavaScript/Reference/Operators/Bitwise_XOR_assignment
translation_of: Web/JavaScript/Reference/Operators/Bitwise_XOR_assignment
---
<div>{{jsSidebar("Operators")}}</div>
<p>按位异或赋值操作符 (<code>^=</code>) 使用二进制表示操作数，进行一次按位异或操作并赋值。</p>
<div>{{EmbedInteractiveExample("pages/js/expressions-bitwise-xor-assignment.html")}}</div>
<h2 id="语法">语法</h2>
<pre class="syntaxbox"><strong>Operator:</strong> x ^= y
<strong>Meaning:</strong> x = x ^ y</pre>
<h2 id="例子">例子</h2>
<h3 id="使用按位异或赋值">使用按位异或赋值</h3>
<pre class="brush: js">let a = 5; // 00000000000000000000000000000101
a ^= 3; // 00000000000000000000000000000011
console.log(a); // 00000000000000000000000000000110
// 6
let b = 5; // 00000000000000000000000000000101
b ^= 0; // 00000000000000000000000000000000
console.log(b); // 00000000000000000000000000000101
// 5
</pre>
<h2 id="规范">规范</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">规范</th>
</tr>
<tr>
<td>{{SpecName('ESDraft', '#sec-assignment-operators', 'Assignment operators')}}</td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
<p>{{Compat("javascript.operators.bitwise_xor_assignment")}}</p>
<h2 id="参见">参见</h2>
<ul>
<li><a href="/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators#Assignment">Assignment operators in the JS guide</a></li>
<li><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Bitwise_XOR">Bitwise XOR operator</a></li>
</ul>
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