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Javascriptでこれ知ってますか?直接idのvalue指定で表示変更?

Last updated at Posted at 2024-07-28

https://developer.mozilla.org/ja/play
のサイトで偶然下記のようにjavascriptを入力したら
getElementById を使わなくても id 属性で要素を指定できる。
一般的な記述
HTML

<textarea name="textarea"  id="city" rows="5" cols="15">ここに何か書いてください</textarea>

Javascript

const cityx = document.getElementById("city")
cityx.value = "新たなデータ"

city.value = "新たなデータ"

だけで表示された!!

参考サイト:
https://mseeeen.msen.jp/elements-can-be-referenced-without-using-getelementbyid/

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