回答編集履歴
1
ちょっと改良。
answer
CHANGED
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@@ -1,11 +1,11 @@
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1
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```JavaScript
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const $li = document.querySelectorAll( '#sw>li' );
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document.querySelector( '#sw' ).onclick = e => {
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if ( e.target
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4
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if ( e.target === e.currentTarget ) return;
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$li.forEach( n => n.classList.remove( 'mizu' ) );
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e.target.
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let item = e.target.closest( 'li' );
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$li.forEach( n => n.classList[ item === n ? 'add' : 'remove' ]( 'mizu' ) );
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-
};
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}; // 編集前のコードがli要素の中にあるHTML要素に対応できていなかったのを修正
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```**動くサンプル：**[https://jsfiddle.net/2n8Lw4eu/](https://jsfiddle.net/2n8Lw4eu/)
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```**動くサンプル：**[https://jsfiddle.net/2n8Lw4eu/2/](https://jsfiddle.net/2n8Lw4eu/2/)
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---
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11
11
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@@ -13,4 +13,7 @@
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13
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[https://developer.mozilla.org/ja/docs/Web/API/Document/querySelector](https://developer.mozilla.org/ja/docs/Web/API/Document/querySelector)
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【Document.querySelectorAll() - Web API | MDN】
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[https://developer.mozilla.org/ja/docs/Web/API/Document/querySelectorAll](https://developer.mozilla.org/ja/docs/Web/API/Document/querySelectorAll)
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[https://developer.mozilla.org/ja/docs/Web/API/Document/querySelectorAll](https://developer.mozilla.org/ja/docs/Web/API/Document/querySelectorAll)
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+
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【Element.closest() - Web API | MDN】
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[https://developer.mozilla.org/ja/docs/Web/API/Element/closest](https://developer.mozilla.org/ja/docs/Web/API/Element/closest)
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