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问题：在其中实现requestAnimationFrame浏览器，当动画选项卡设置为背景（新标签页打开），动画计时是borked
Problem: In browsers which implement requestAnimationFrame, when tab with animation is set to background (new tab opened), animation timing is borked.
问：我requestAnimationFrame的理解是，当移动到后台标签页的动画应该停止，但是从这个例子，它看起来像WebKit浏览器完成当前的动画，然后停止
Question: My understanding of requestAnimationFrame is that animation should stop when moved to a background tab, but from this example, it seems like webkit browsers complete the current animation and THEN stop.
问题的似乎的来自一个事实，即在第二和第三球需要移动之前的延迟，需要的setTimeout。是否有使用requestAnimationFrame在jQuery的实现，还是我只是编码这个错误？的方式有问题。
The problem seems to come from the fact that the second and third balls need a delay before moving, requiring a setTimeout. Is there a problem with the way requestAnimationFrame is implemented in jQuery, or am I just coding this wrong?
我试着遵循 http://api.jquery.com/animate/使用延迟（）和队列（），但似乎无法得到正确的效果。
I've tried to follow the advice on http://api.jquery.com/animate/ using delay() and queue(), but can't seem to get the right effect.
推荐答案
使用旧版本的jQuery requestAnimationFrame（1.4.2）之前。似乎是错误的。我不认为英国皇家空军的正确实施呢。
Using an old version of jQuery before requestAnimationFrame (1.4.2). Seems wrong. I don't think rAF is properly implemented yet.
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