回答編集履歴
1
調整
test
CHANGED
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@@ -1,5 +1,5 @@
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1
1
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```javascript
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2
2
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const text = 'before[123]';
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3
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-
const rep = text.replace(/(?<=before\[)
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3
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+
const rep = text.replace(/(?<=before\[)\d+(?=\])/g,x=>parseInt(x)+1);
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4
4
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console.log(rep);
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5
5
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```
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