如何检测当鼠标离开窗口？ [英] How can I detect when the mouse leaves the window?
问题描述
我希望能够当鼠标离开窗口，所以我可以从发射，而用户的鼠标在别处停止事件检测。
I want to be able to detect when the mouse leaves the window so I can stop events from firing while the user's mouse is elsewhere.
如何做到这一点任何想法？
Any ideas of how to do this?
推荐答案
这类型的行为，而在HTML页面中实现拖放行为通常期望的。该解决方案如下于IE 8.0.6，3.6.6火狐，歌剧10.53，和Safari 4的MS Windows XP计算机上进行测试。结果
从彼得·保罗·科赫首先一点功能;跨浏览器的事件处理程序：
This type of behavior is usually desired while implementing drag-drop behavior on an html page. The solution below was tested on IE 8.0.6, FireFox 3.6.6, Opera 10.53, and Safari 4 on an MS Windows XP machine.
First a little function from Peter-Paul Koch; cross browser event handler:
function addEvent(obj, evt, fn) {
if (obj.addEventListener) {
obj.addEventListener(evt, fn, false);
}
else if (obj.attachEvent) {
obj.attachEvent("on" + evt, fn);
}
}
然后用这个方法将事件处理程序附加到文档对象mouseout事件：
And then use this method to attach an event handler to the document objects mouseout event:
addEvent(document, "mouseout", function(e) {
e = e ? e : window.event;
var from = e.relatedTarget || e.toElement;
if (!from || from.nodeName == "HTML") {
// stop your drag event here
// for now we can just use an alert
alert("left window");
}
});
最后，这里是嵌入式调试脚本的HTML页面：
Finally, here is an html page with the script embedded for debugging:
<html>
<head>
<script type="text/javascript">
function addEvent(obj, evt, fn) {
if (obj.addEventListener) {
obj.addEventListener(evt, fn, false);
}
else if (obj.attachEvent) {
obj.attachEvent("on" + evt, fn);
}
}
addEvent(window,"load",function(e) {
addEvent(document, "mouseout", function(e) {
e = e ? e : window.event;
var from = e.relatedTarget || e.toElement;
if (!from || from.nodeName == "HTML") {
// stop your drag event here
// for now we can just use an alert
alert("left window");
}
});
});
</script>
</head>
<body></body>
</html>
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