回答編集履歴
1
chousei
test
CHANGED
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@@ -1,12 +1,12 @@
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1
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```javascript
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2
2
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3
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-
const cls = ["btn01","btn02","btn03"]
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3
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+
const cls = ["btn01","btn02","btn03"];
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4
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5
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document.querySelectorAll('.btn').forEach((x,y)=>{
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6
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7
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x.addEventListener('click',()=>{
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8
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9
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x.
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9
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x.textContent="変わったよ";
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10
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11
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x.classList.add(cls[y]);
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12
12
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