Today I've got kind of theoretical question. Why does scroll event not bubble? Is it connected with performance issues? I did some digging, but unfortunately didn't find any answers that would fulfill my curiosity.
Thanks for your replies :)
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What would you do that would require it to bubble? – Zach Saucier Oct 29 '13 at 13:15
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Doesn't it bubble? edit: Oh, you mean when it's not dispatched on the Document. – Robert Oct 29 '13 at 13:49
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3@ZachSaucier it'd be great if it bubbled for event delegation – Jason Dec 10 '14 at 01:19
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It bubbles but not on elements. It bubbles at the document object up to document.defaultView (window of the document). This behavior happens to avoid performance issues (scroll events can fire at a high rate).
If you want to learn more about scrolling I would suggest reading the W3 documentation:
https://www.w3.org/TR/cssom-view/#scrolling
I hope it helps.
Elvio Cavalcante
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3It doesn't bubble, but it _can_ be captured. Set the 3rd argument of `addEventListener` to `true` – Halcyon Feb 17 '22 at 11:55