回答編集履歴
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途中で投稿されたので
answer
CHANGED
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@@ -1,3 +1,4 @@
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DocumentFragment を作って置き換えます。
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```jQuery
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var original = $('.printpage');
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var fragment = document.createDocumentFragment();
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@@ -11,6 +12,7 @@
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fragment.removeChild(fragment.lastChild);
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original.replaceWith(fragment);
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```
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[https://developer.mozilla.org/ja/docs/Web/API/DocumentFragment](https://developer.mozilla.org/ja/docs/Web/API/DocumentFragment)
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[https://api.jquery.com/slice/](https://api.jquery.com/slice/)
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[https://api.jquery.com/replaceWith/](https://api.jquery.com/replaceWith/)
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