回答編集履歴
1
参考
answer
CHANGED
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@@ -11,4 +11,25 @@
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11
11
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}
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12
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});
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13
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});
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14
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```
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15
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# 追記
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16
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ちなみにelemを配列で宣言して、iをletで処理すればある程度までできます
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17
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```javascript
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18
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<script>
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19
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window.addEventListener('DOMContentLoaded', function(e){
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var elem=[];
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21
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for(let i = 1; i < 4; i++){
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22
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elem[i]=document.querySelector('#x'+i);
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elem[i].addEventListener('mouseover', function(e){
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24
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console.log(i);
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25
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});
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}
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});
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</script>
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30
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<div id="x1">1</div>
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<div id="x2">2</div>
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<div id="x3">3</div>
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34
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<div id="x4">4</div>
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14
35
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```
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