Javascript MouseOver / MouseOut 子事件
我有一个带有一些子元素的元素。当鼠标离开父元素时，我想隐藏父元素及其子元素。我遇到的问题是，当我将鼠标悬停在任何子项上时，将触发 mouseout 事件。防止这种情况的最佳方法是什么？我真的只希望当鼠标不在父级或其任何子级内时触发该事件。
I have an element with some child elements. When the mouse leaves the parent element I want to hide the parent and it's children. Problem I'm having is that when I hover over any of the children, the mouseout event is being fired. What's the best way to prevent this? I really only want the event to fire when the mouse is not within the parent or any of it's children.
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事件从子级冒泡到父级（在父级中捕获该事件）。
您应该通过添加侦听器并让传播在那里停止来捕获子级上的事件。
此代码将阻止事件冒泡到父级处理程序
问题：鼠标关闭事件由父级触发，而本不该触发。将鼠标悬停在子级上不应触发鼠标从父级上移开。我们怎样才能阻止这种情况呢？
The event is bubbling up from the child to the parent (where it is being caught)
You should catch the event on the children by adding a listener and making the propagation stop there.
This code will stop the event from bubbling up to the parents handler
question: The mouse off event is fired by the parent, when it should not. Mouseing over the child should not trigger a mouse off from the parent. How can we stop this?
您只需要一个附加到父元素的 mouseout 处理程序。但是...
您需要检查父级实际上是 mouseout 事件的目标，而不是从子级之一冒泡的事件。检查 event.target (W3C) 和 event.srcElement (IE)。
您还需要检查鼠标将进入的元素是否不是父元素的后代。检查 event.latedTarget (W3C) 和 event.toElement (IE)。
You only need a mouseout handler attached to the parent element. But...
You need to check that the parent is actually the target of the mouseout event, as opposed to the event bubbling up from one of the children. Check event.target (W3C) and event.srcElement (IE).
You also need to check that the element that the mouse will be entering is not a descendant of the parent. Check event.relatedTarget (W3C) and event.toElement (IE).
来自 http://api.jquery.com/mouseover/：
mouseout与mouseleave也是如此From http://api.jquery.com/mouseover/:
and the same goes for
mouseoutvsmouseleave