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---
title: Bitwise XOR (^)
slug: Web/JavaScript/Reference/Operators/Bitwise_XOR
translation_of: Web/JavaScript/Reference/Operators/Bitwise_XOR
---
<div>{{jsSidebar("Operators")}}</div>
<p>The bitwise XOR operator (<code>^</code>) returns a <code>1</code> in each bit position for which the corresponding bits of either but not both operands are <code>1</code>s.</p>
<div>{{EmbedInteractiveExample("pages/js/expressions-bitwise-xor.html")}}</div>
<h2 id="语法">语法</h2>
<pre class="syntaxbox"><code><var>a</var> ^ <var>b</var></code>
</pre>
<h2 id="描述">描述</h2>
<p>The operands are converted to 32-bit integers and expressed by a series of bits (zeroes and ones). Numbers with more than 32 bits get their most significant bits discarded. For example, the following integer with more than 32 bits will be converted to a 32 bit integer:</p>
<pre class="brush: js">Before: 11100110111110100000000000000110000000000001
After: 10100000000000000110000000000001</pre>
<p>Each bit in the first operand is paired with the corresponding bit in the second operand: <em>first bit</em> to <em>first bit</em>, <em>second bit</em> to <em>second bit</em>, and so on.</p>
<p>The operator is applied to each pair of bits, and the result is constructed bitwise.</p>
<p>The truth table for the XOR operation is:</p>
<table class="standard-table">
<thead>
<tr>
<th scope="col">a</th>
<th scope="col">b</th>
<th scope="col">a XOR b</th>
</tr>
</thead>
<tbody>
<tr>
<td>0</td>
<td>0</td>
<td>0</td>
</tr>
<tr>
<td>0</td>
<td>1</td>
<td>1</td>
</tr>
<tr>
<td>1</td>
<td>0</td>
<td>1</td>
</tr>
<tr>
<td>1</td>
<td>1</td>
<td>0</td>
</tr>
</tbody>
</table>
<pre class="brush: js">. 9 (base 10) = 00000000000000000000000000001001 (base 2)
14 (base 10) = 00000000000000000000000000001110 (base 2)
--------------------------------
14 ^ 9 (base 10) = 00000000000000000000000000000111 (base 2) = 7 (base 10)
</pre>
<p>Bitwise XORing any number <code><var>x</var></code> with <code>0</code> yields <code><var>x</var></code>.</p>
<h2 id="Examples">Examples</h2>
<h3 id="Using_bitwise_XOR">Using bitwise XOR</h3>
<pre class="brush: js">// 9 (00000000000000000000000000001001)
// 14 (00000000000000000000000000001110)
14 ^ 9;
// 7 (00000000000000000000000000000111)</pre>
<h2 id="规范">规范</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">Specification</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName('ESDraft', '#prod-BitwiseXORExpression', 'Bitwise XOR expression')}}</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")}}</p>
<h2 id="参见">参见</h2>
<ul>
<li><a href="/en-US/docs/Web/JavaScript/Guide/Expressions_and_Operators#Bitwise">Bitwise operators in the JS guide</a></li>
<li><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Bitwise_XOR_assignment">Bitwise XOR assignment operator</a></li>
</ul>
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