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Merge pull request #21 from petamoriken/fix/passive-event-example
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fix: Passive Event Listener の例を wheel イベントに変更
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YusukeHirao authored May 21, 2024
2 parents d3c532c + 254eb10 commit 81fa827
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2 changes: 1 addition & 1 deletion src/js.md
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Expand Up @@ -336,7 +336,7 @@ matchMedia(`(min-width: 768px)`).addEventListener('change', (media) => {
### Passive Event Listener を利用する
```js
Element.addEventListener('scroll', onScroll, { passive: true });
Element.addEventListener('wheel', onScroll, { passive: true });
```
`passive`を有効にすると`preventDefault()`の呼び出しを待たずにリスナー関数を実行するため、その関数がブラウザの既定のアクション(たとえばスクロール)をブロックすることがなくなります。
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