blob: c8e269272346c2e9c6dc1946d618985705bee78c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
---
title: Bitwise OR assignment (|=)
slug: Web/JavaScript/Reference/Operators/Bitwise_OR_assignment
translation_of: Web/JavaScript/Reference/Operators/Bitwise_OR_assignment
---
<div>{{jsSidebar("Operators")}}</div>
<p>The bitwise OR assignment operator (<code>|=</code>) uses the binary representation of both operands, does a bitwise OR operation on them and assigns the result to the variable.</p>
<div>{{EmbedInteractiveExample("pages/js/expressions-bitwise-or-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="Examples">Examples</h2>
<h3 id="Using_bitwise_OR_assignment">Using bitwise OR assignment</h3>
<pre class="brush: js">let a = 5;
a |= 2; // 7
// 5: 00000000000000000000000000000101
// 2: 00000000000000000000000000000010
// -----------------------------------
// 7: 00000000000000000000000000000111</pre>
<h2 id="Specifications">Specifications</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">Specification</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName('ESDraft', '#sec-assignment-operators', 'Assignment operators')}}</td>
</tr>
</tbody>
</table>
<h2 id="Browser_compatibility">Browser compatibility</h2>
<p>{{Compat("javascript.operators.bitwise_or_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/Bitwise_OR">Bitwise OR operator</a></li>
<li><a href="/en-US/docs/Web/JavaScript/Reference/Operators/Logical_OR_assignment">Logical OR assignment (<code>||=</code>)</a></li>
</ul>
|
