From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:40:17 -0500
Subject: initial commit

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+---
+title: 按位与赋值(&=)
+slug: Web/JavaScript/Reference/Operators/Bitwise_AND_assignment
+tags:
+  - JavaScript
+  - 按位与赋值运算
+  - 操作符运算
+translation_of: Web/JavaScript/Reference/Operators/Bitwise_AND_assignment
+---
+<div>{{jsSidebar("Operators")}}</div>
+
+<div>按位与赋值运算符（＆=）表示两个操作数的二进制，对它们进行按位AND运算并将结果分配给变量。</div>
+
+<div>{{EmbedInteractiveExample("pages/js/expressions-bitwise-and-assignment.html")}}</div>
+
+<div></div>
+
+
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox notranslate"><strong>Operator:</strong> x &amp;= y
+<strong>Meaning:</strong>  x  = x &amp; y
+</pre>
+
+<h2 id="例子">例子</h2>
+
+<h3 id="按位与赋值运算">按位与赋值运算</h3>
+
+<pre class="brush: js notranslate">let a = 5;
+// 5:     00000000000000000000000000000101
+// 2:     00000000000000000000000000000010
+a &amp;= 2; // 0</pre>
+
+<h2 id="规范">规范</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Specification</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_and_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_AND">Bitwise AND operator</a></li>
+</ul>
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