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Diffstat (limited to 'files/ja/web/javascript/reference/operators/right_shift_assignment')
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diff --git a/files/ja/web/javascript/reference/operators/right_shift_assignment/index.html b/files/ja/web/javascript/reference/operators/right_shift_assignment/index.html new file mode 100644 index 0000000000..6ff0bb1cba --- /dev/null +++ b/files/ja/web/javascript/reference/operators/right_shift_assignment/index.html @@ -0,0 +1,61 @@ +--- +title: 右シフト代入 (>>=) +slug: Web/JavaScript/Reference/Operators/Right_shift_assignment +tags: + - Assignment operator + - JavaScript + - Language feature + - Operator + - Reference +translation_of: Web/JavaScript/Reference/Operators/Right_shift_assignment +--- +<div>{{jsSidebar("Operators")}}</div> + +<p>右シフト代入演算子 (<code>>>=</code>) は、指定された量のビットを右に移動し、結果を変数に代入します。</p> + +<div>{{EmbedInteractiveExample("pages/js/expressions-right-shift-assignment.html")}}</div> + +<div></div> + + + +<h2 id="構文">構文</h2> + +<pre class="syntaxbox notranslate"><strong>Operator:</strong> x >>= y +<strong>Meaning:</strong> x = x >> y</pre> + +<h2 id="例">例</h2> + +<h3 id="右シフト代入の使用">右シフト代入の使用</h3> + +<pre class="brush: js notranslate">let a = 5; // (00000000000000000000000000000101) +a >>= 2; // 1 (00000000000000000000000000000001) + +let b = -5; // (-00000000000000000000000000000101) +b >>= 2; // -2 (-00000000000000000000000000000010)</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-assignment-operators', 'Assignment operators')}}</td> + </tr> + </tbody> +</table> + +<h2 id="ブラウザー実装状況">ブラウザー実装状況</h2> + + + +<p>{{Compat("javascript.operators.right_shift_assignment")}}</p> + +<h2 id="関連項目">関連項目</h2> + +<ul> + <li><a href="/docs/Web/JavaScript/Guide/Expressions_and_Operators#Assignment">代入演算子</a></li> + <li><a href="/docs/Web/JavaScript/Reference/Operators/Right_shift">右シフト演算子</a></li> +</ul> |