requestIdleCallback vs setTimeout: The Delay I Actually Measured

Описание и применение

<ul> <li><p>On an idle page, requestIdleCallback and setTimeout(0) both fired in under 6ms across every run</p></li> <li><p>Under a simulated 8ms-per-frame render load, requestIdleCallback delay jumped to 13.6-28.8ms</p></li> <li><p>setTimeout(0) stayed under 0.3ms delay in the same busy-page test, every single run</p></li> <li><p>requestIdleCallback is the one that waits, not setTimeout, which is backwards from what most advice assumes</p></li> </ul> <p>I'd always assumed requestIdleCallback was the polite one and setTimeout(0) was the one that could jump the queue if the page got busy. I bui

Задача

<ul> <li><p>On an idle page, requestIdleCallback and setTimeout(0) both fired in under 6ms across every run</p></li> <li><p>Under a simulated 8ms-per-frame render load, requestIdleCallback delay jumped to 13.6-28.8ms</p></li> <li><p>setTimeout(0) stayed under 0.3ms delay in the same busy-page test, every single run</p></li> <li><p>requestIdleCallback is the one that waits, not setTimeout, which is backwards from what most advice assumes</p></li> </ul> <p>I'd always assumed requestIdleCallback was the polite one and setTimeout(0) was the one that could jump the queue if the page got busy. I bui

Результат

<ul> <li><p>On an idle page, requestIdleCallback and setTimeout(0) both fired in under 6ms across every run</p></li> <li><p>Under a simulated 8ms-per-frame render load, requestIdleCallback delay jumped to 13.6-28.8ms</p></li> <li><p>setTimeout(0) stayed under 0.3ms delay in the same busy-page test, every single run</p></li> <li><p>requestIdleCallback is the one that waits, not setTimeout, which is backwards from what most advice assumes</p></li> </ul> <p>I'd always assumed requestIdleCallback was the polite one and setTimeout(0) was the one that could jump the queue if the page got busy. I bui

Доказательства

requestIdleCallback vs setTimeout: The Delay I Actually Measured

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