回答編集履歴
1
訂正
answer
CHANGED
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@@ -5,7 +5,7 @@
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5
5
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```
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6
6
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↓
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7
7
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```javascript
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8
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-
if (aNode.childNodes
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8
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+
if (aNode.childNodes){
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9
9
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for (var i =aNode.childNodes.length-1; i>=0; i--) {
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10
10
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aNode.removeChild(aNode.childNodes[i]);
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11
11
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}
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