回答編集履歴
1
微修正
test
CHANGED
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@@ -2,11 +2,13 @@
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2
2
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3
3
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function findIndexOfStr(arr, str) {
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4
4
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5
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// return arr.reduce( ( pre, curr, i )=> pre != -1 ? pre : curr.includes( str ) ? i : -1, -1 ); // 微修正
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6
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+
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5
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-
return arr.reduce( ( pre, curr, i )=> pre != -1
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7
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return arr.reduce( ( pre, curr, i )=> pre != -1 || !curr.includes( str ) ? pre : i, -1 );
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6
8
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7
9
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}
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10
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9
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-
```**動くサンプル：**[https://jsfiddle.net/bd6tw2L2/](https://jsfiddle.net/bd6tw2L2/)
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11
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+
```**動くサンプル：**[https://jsfiddle.net/bd6tw2L2/1/](https://jsfiddle.net/bd6tw2L2/1/)
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10
12
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11
13
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12
14
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