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: 乗算 (*)
+slug: Web/JavaScript/Reference/Operators/Multiplication
+tags:
+  - JavaScript
+  - Language feature
+  - Operator
+  - Reference
+translation_of: Web/JavaScript/Reference/Operators/Multiplication
+---
+<div>{{jsSidebar("Operators")}}</div>
+
+<p>乗算演算子 (<code>*</code>) はオペランドの積を生成します。</p>
+
+<div>{{EmbedInteractiveExample("pages/js/expressions-multiplication.html")}}</div>
+
+<div></div>
+
+
+
+<h2 id="構文">構文</h2>
+
+<pre class="syntaxbox notranslate"><strong>Operator:</strong> <var>x</var> * <var>y</var>
+</pre>
+
+<h2 id="例">例</h2>
+
+<h3 id="数値を使用した乗算">数値を使用した乗算</h3>
+
+<pre class="brush: js notranslate"> 2 * 2      // 4
+-2 * 2     // -4
+</pre>
+
+<h3 id="無限大との乗算">無限大との乗算</h3>
+
+<pre class="brush: js notranslate">Infinity * 0         // NaN
+Infinity * Infinity  // Infinity</pre>
+
+<h3 id="非数との乗算">非数との乗算</h3>
+
+<pre class="brush: js notranslate">'foo' * 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', 'Multiplication 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.multiplication")}}</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/Division">除算演算子</a></li>
+ <li><a href="https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Operators/Remainder">剰余演算子</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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