`

javascript离开当前页面就出发事件

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
 <title>Confirm Before Leave</title>
 <script language="javascript" type="text/javascript">
<!--
 
window.onbeforeunload = function() { 
    return("您真的要离开本页吗?");
}

 //-->
</script>
</head>
<body>
javascript离开当前页面或刷新就出发事件
</body>
</html>
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