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+---
+title: Right shift assignment (>>=)
+slug: Web/JavaScript/Reference/Operators/Right_shift_assignment
+translation_of: Web/JavaScript/Reference/Operators/Right_shift_assignment
+---
+<div>{{jsSidebar("Operators")}}</div>
+
+<p>The right shift assignment operator (<code>&gt;&gt;=</code>) moves the specified amount of bits to the right and assigns the result to the variable.</p>
+
+<div>{{EmbedInteractiveExample("pages/js/expressions-right-shift-assignment.html")}}</div>
+
+<div></div>
+
+
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox notranslate"><strong>Operator:</strong> x &gt;&gt;= y
+<strong>Meaning:</strong>  x   = x &gt;&gt; y</pre>
+
+<h2 id="Examples">Examples</h2>
+
+<h3 id="Using_right_shift_assignment">Using right shift assignment</h3>
+
+<pre class="brush: js notranslate">let a = 5; //   (00000000000000000000000000000101)
+a &gt;&gt;= 2;   // 1 (00000000000000000000000000000001)
+
+let b = -5; //  (-00000000000000000000000000000101)
+b &gt;&gt;= 2;  // -2 (-00000000000000000000000000000010)</pre>
+
+<h2 id="Specifications">Specifications</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="Browser_compatibility">Browser compatibility</h2>
+
+
+
+<p>{{Compat("javascript.operators.right_shift_assignment")}}</p>
+
+<h2 id="See_also">See also</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/Right_shift">Right shift operator</a></li>
+</ul>
+
+<p>
+ <audio style="display: none;"></audio>
+</p>