JavaScript の算術演算子の文書を更新

- 2021/09/10 時点の英語版に同期

1 files changed, 34 insertions, 45 deletions

diff --git a/files/ja/web/javascript/reference/operators/subtraction/index.md b/files/ja/web/javascript/reference/operators/subtraction/index.md
index 1a02506128..5e074c174c 100644
--- a/files/ja/web/javascript/reference/operators/subtraction/index.md
+++ b/files/ja/web/javascript/reference/operators/subtraction/index.md
@@ -3,66 +3,55 @@ title: 減算 (-)
 slug: Web/JavaScript/Reference/Operators/Subtraction
 tags:
   - JavaScript
-  - Language feature
-  - Operator
+  - 言語機能
+  - 演算子
   - Reference
+browser-compat: javascript.operators.subtraction
 translation_of: Web/JavaScript/Reference/Operators/Subtraction
 ---
-<div>{{jsSidebar("Operators")}}</div>
+{{jsSidebar("Operators")}}
 
-<p>減算演算子 (<code>-</code>) は2つのオペランドを減算し、それらの差を生成します。</p>
+減算演算子 (`-`) は 2 つのオペランドの間で減算し、それらの差を生成します。
 
-<div>{{EmbedInteractiveExample("pages/js/expressions-subtraction.html")}}</div>
+{{EmbedInteractiveExample("pages/js/expressions-subtraction.html")}}
 
-<div></div>
+## 構文
 
+```js
+x - y
+```
 
+## 例
 
-<h2 id="構文">構文</h2>
+### 数値の減算
 
-<pre class="syntaxbox notranslate"><strong>Operator:</strong> <var>x</var> - <var>y</var>
-</pre>
+```js
+5 - 3     // 2
+3 - 5     // -2
+```
 
-<h2 id="例">例</h2>
+### 非数の減算
 
-<h3 id="数値による減算">数値による減算</h3>
+```js
+'foo' - 3 // NaN
+```
 
-<pre class="brush: js notranslate">5 - 3     // 2
-3 - 5     // -2</pre>
+## 仕様書
 
-<h3 id="非数による減算">非数による減算</h3>
+{{Specifications}}
 
-<pre class="brush: js notranslate">'foo' - 3 // NaN</pre>
+## ブラウザーの互換性
 
-<h2 id="仕様">仕様</h2>
+{{Compat}}
 
-<table class="standard-table">
- <tbody>
-  <tr>
-   <th scope="col">仕様</th>
-  </tr>
-  <tr>
-   <td>{{SpecName('ESDraft', '#sec-subtraction-operator-minus', 'Subtraction operator')}}</td>
-  </tr>
- </tbody>
-</table>
+## 関連情報
 
-<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.subtraction")}}</p>
-
-<h2 id="関連項目">関連項目</h2>
-
-<ul>
- <li><a href="/ja/docs/Web/JavaScript/Reference/Operators/Addition">加算演算子</a></li>
- <li><a href="/ja/docs/Web/JavaScript/Reference/Operators/Multiplication">乗算演算子</a></li>
- <li><a href="/ja/docs/Web/JavaScript/Reference/Operators/Division">除算演算子</a></li>
- <li><a href="/ja/docs/Web/JavaScript/Reference/Operators/Remainder">剰余演算子</a></li>
- <li><a href="/ja/docs/Web/JavaScript/Reference/Operators/Exponentiation">べき乗演算子</a></li>
- <li><a href="/ja/docs/Web/JavaScript/Reference/Operators/Increment">インクリメント演算子</a></li>
- <li><a href="/ja/docs/Web/JavaScript/Reference/Operators/Decrement">デクリメント演算子</a></li>
- <li><a href="/ja/docs/Web/JavaScript/Reference/Operators/Unary_negation">単項マイナス演算子</a></li>
- <li><a href="/ja/docs/Web/JavaScript/Reference/Operators/Unary_plus">単項プラス演算子</a></li>
-</ul>
+- [加算演算子](/ja/docs/Web/JavaScript/Reference/Operators/Addition)
+- [除算演算子](/ja/docs/Web/JavaScript/Reference/Operators/Division)
+- [乗算演算子](/ja/docs/Web/JavaScript/Reference/Operators/Multiplication)
+- [剰余演算子](/ja/docs/Web/JavaScript/Reference/Operators/Remainder)
+- [べき乗演算子](/ja/docs/Web/JavaScript/Reference/Operators/Exponentiation)
+- [インクリメント演算子](/ja/docs/Web/JavaScript/Reference/Operators/Increment)
+- [デクリメント演算子](/ja/docs/Web/JavaScript/Reference/Operators/Decrement)
+- [単項マイナス演算子](/ja/docs/Web/JavaScript/Reference/Operators/Unary_negation)
+- [単項プラス演算子](/ja/docs/Web/JavaScript/Reference/Operators/Unary_plus)