鼠标快速划动时有bug，导致二级菜单出不来或者收回不完整
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虽然我么看代码
我个人感觉啊 是你代码不健壮导致
你这两个动画是个互斥的动画 一个展开一个收起
所以说呢 在其中一个没有执行完之前 另一个应该不能执行
我感觉你问题出在这 |
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