回答編集履歴
1
tuiki
test
CHANGED
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@@ -13,3 +13,35 @@
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13
13
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</pre>
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14
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15
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```
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16
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17
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19
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# sample
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21
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```javascript
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22
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23
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<script>
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25
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window.addEventListener('DOMContentLoaded', ()=>{
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[].forEach.call(document.querySelectorAll('.error'),x=>{
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28
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29
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x.parentNode.insertBefore(document.createElement('br'),x.nextElementSibling);
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30
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31
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});
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32
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33
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});
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34
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35
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</script>
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36
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37
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<body>
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39
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<span class="error">エラー1</span>
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40
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41
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<span class="error">エラー2</span>
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42
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43
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<span class="error">エラー3</span>
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44
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45
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</body>
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46
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47
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```
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