回答編集履歴
2
テキスト修正
answer
CHANGED
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@@ -5,6 +5,12 @@
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5
5
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を使わなくても、標準の [filter](https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Array/filter) を使って以下でよいかと思います。
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6
6
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7
7
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```javascript
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8
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let list = [
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9
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"13-10", "12-11", "13-11", "13-12", "12-12", "13-13",
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10
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"13-14", "13-15", "13-16", "13-17", "12-13"];
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11
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8
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-
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12
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list = list.filter(e => e.startsWith('13-')); // => '13-' で始まる要素を抽出
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13
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14
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console.log(list);
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9
15
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```
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10
16
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- **動作確認用 CodePen: **[https://codepen.io/jun68ykt/pen/ExaoZbd?editors=0012](https://codepen.io/jun68ykt/pen/ExaoZbd?editors=0012)
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1
テキスト修正
answer
CHANGED
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@@ -6,4 +6,5 @@
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6
6
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7
7
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```javascript
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8
8
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const filteredList = list.filter(e => e.startsWith('13-'));
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9
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```
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9
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```
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10
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- **動作確認用 CodePen: **[https://codepen.io/jun68ykt/pen/ExaoZbd?editors=0012](https://codepen.io/jun68ykt/pen/ExaoZbd?editors=0012)
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