回答編集履歴
1
不要なtextarea要素を削除
answer
CHANGED
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@@ -23,7 +23,6 @@
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23
23
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24
24
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<button id="btn">add</button>
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25
25
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26
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-
<textarea id="sample"></textarea>
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27
26
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<script>
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28
27
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'use strict';
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29
28
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document.getElementById('wrap').addEventListener('click', function handleClick (event) {
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