From fb129cca2082cbc57f93025a2e46797e5fb4a0f3 Mon Sep 17 00:00:00 2001
From: Masahiro FUJIMOTO <mfujimot@gmail.com>
Date: Sun, 26 Sep 2021 01:32:15 +0900
Subject: 代入演算子の文書を更新
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- 2021/07/21 時点の英語版に更新
---
 .../operators/right_shift_assignment/index.md      | 49 ++++++++--------------
 1 file changed, 18 insertions(+), 31 deletions(-)

(limited to 'files/ja/web/javascript/reference/operators/right_shift_assignment')

diff --git a/files/ja/web/javascript/reference/operators/right_shift_assignment/index.md b/files/ja/web/javascript/reference/operators/right_shift_assignment/index.md
index be17efee9c..fb30c2d912 100644
--- a/files/ja/web/javascript/reference/operators/right_shift_assignment/index.md
+++ b/files/ja/web/javascript/reference/operators/right_shift_assignment/index.md
@@ -7,55 +7,42 @@ tags:
   - 言語機能
   - 演算子
   - Reference
+browser-compat: javascript.operators.right_shift_assignment
 translation_of: Web/JavaScript/Reference/Operators/Right_shift_assignment
 ---
 {{jsSidebar("Operators")}}
 
-右シフト代入演算子 (`&gt;&gt;=`) 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。
+右シフト代入演算子 (`>>=`) は、指定された数だけビットを右に移動し、結果を変数に代入します。
 
 {{EmbedInteractiveExample("pages/js/expressions-right-shift-assignment.html")}}
 
-<div></div>
-
-
-
 ## 構文
 
-<pre class="syntaxbox notranslate"><strong>Operator:</strong> x &gt;&gt;= y
-<strong>Meaning:</strong>  x   = x &gt;&gt; y</pre>
+```js
+x >>= y // x = x >> y
+```
 
 ## 例
 
-<h3 id="右シフト代入の使用">右シフト代入の使用</h3>
+### 右シフト代入の使用
 
-<pre class="brush: js notranslate">let a = 5; //   (00000000000000000000000000000101)
-a &gt;&gt;= 2;   // 1 (00000000000000000000000000000001)
+```js
+let a = 5; //   (00000000000000000000000000000101)
+a >>= 2;   // 1 (00000000000000000000000000000001)
 
 let b = -5; //  (-00000000000000000000000000000101)
-b &gt;&gt;= 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>
+b >>= 2;  // -2 (-00000000000000000000000000000010)
+```
 
-<h2 id="ブラウザー実装状況">ブラウザー実装状況</h2>
+## 仕様書
 
+{{Specifications}}
 
+## ブラウザーの互換性
 
-{{Compat("javascript.operators.right_shift_assignment")}}
+{{Compat}}
 
-<h2 id="関連項目">関連項目</h2>
+## 関連情報
 
-<ul>
- <li><a href="/ja/docs/Web/JavaScript/Guide/Expressions_and_Operators#Assignment">代入演算子</a></li>
- <li><a href="/ja/docs/Web/JavaScript/Reference/Operators/Right_shift">右シフト演算子</a></li>
-</ul>
+- [JavaScript ガイドの代入演算子](/ja/docs/Web/JavaScript/Guide/Expressions_and_Operators#assignment)
+- [右シフト演算子](/ja/docs/Web/JavaScript/Reference/Operators/Right_shift)
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