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不懂就问系列 requestAnimationFrame 中存在耗时任务

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不懂就问系列 requestAnimationFrame 中存在耗时任务

requestAnimationFrame 是每帧必执行的吗
requestAnimationFrame 中如果放一些耗时任务会掉帧吗


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requestAnimationFrame传入的回调函数在页面重绘之前调用，个人感觉应该符合你所说的每帧必执行；
在回调函数中处理耗时任务，应该作为性能优化去处理，掉帧什么的无可厚非


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