Listen for changes? Or poll for changes? Wouldn't your way consume a lot of unne... | Hacker News

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		ars on Sept 12, 2013 \| parent \| context \| favorite \| on: H2 {position: sticky} [video] Listen for changes? Or poll for changes? Wouldn't your way consume a lot of unnecessary CPU?

yuchi on Sept 13, 2013 [–]

Not exactly poll. Use scroll events to start your polling; after the second time your loop function doesn't find a change in the scrollTop, stop requesting frames.

Even without this guard, with just the `old !== getScrollTop()` it doesn't eat so much CPU neither.

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