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---
title: 剰余 (%)
slug: Web/JavaScript/Reference/Operators/Remainder
tags:
- JavaScript
- Language feature
- Operator
- Reference
translation_of: Web/JavaScript/Reference/Operators/Remainder
---
<div>{{jsSidebar("Operators")}}</div>
<p>剰余演算子 (<code>%</code>) は、1つ目のオペランドが2つ目のオペランドで除算されたときに残った剰余を返します。 これは常に配当のサインを取ります。</p>
<div>{{EmbedInteractiveExample("pages/js/expressions-remainder.html")}}</div>
<div></div>
<h2 id="構文">構文</h2>
<pre class="syntaxbox notranslate"><strong>Operator:</strong> <var>var1</var> % <var>var2</var>
</pre>
<h2 id="例">例</h2>
<h3 id="正の値の剰余">正の値の剰余</h3>
<pre class="brush: js notranslate"> 12 % 5 // 2
1 % -2 // 1
1 % 2 // 1
2 % 3 // 2
5.5 % 2 // 1.5
</pre>
<h3 id="負の値の剰余">負の値の剰余</h3>
<pre class="brush: js notranslate">-12 % 5 // -2
-1 % 2 // -1
-4 % 2 // -0</pre>
<h3 id="NaNの剰余">NaNの剰余</h3>
<pre class="brush: js notranslate">NaN % 2 // NaN</pre>
<h2 id="仕様">仕様</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">仕様</th>
</tr>
<tr>
<td>{{SpecName('ESDraft', '#sec-multiplicative-operators', 'Remainder operator')}}</td>
</tr>
</tbody>
</table>
<h2 id="ブラウザーの互換性">ブラウザーの互換性</h2>
<p>{{Compat("javascript.operators.remainder")}}</p>
<h2 id="関連項目">関連項目</h2>
<ul>
<li><a href="https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Operators/Addition">加算演算子</a></li>
<li><a href="https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Operators/Subtraction">減算演算子</a></li>
<li><a href="https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Operators/Multiplication">乗算演算子</a></li>
<li><a href="https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Operators/Division">除算演算子</a></li>
<li><a href="https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Operators/Exponentiation">べき乗演算子</a></li>
<li><a href="https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Operators/Increment">インクリメント演算子</a></li>
<li><a href="https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Operators/Decrement">デクリメント演算子</a></li>
<li><a href="https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Operators/Unary_negation">単項マイナス演算子</a></li>
<li><a href="https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Operators/Unary_plus">単項プラス演算子</a></li>
</ul>
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