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JavaScript countdown jump (invoke asp.net variable URL)

Source: Internet
Author: User
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Example: ===========logout.aspx page ============================

<title></title>
<script language= ' javascript ' type= ' Text/javascript ' >
var secs = 5; Number of seconds to Countdown
var URL;
function Load (URL) {
url = URL;
for (Var i=secs;i>=0;i--)
{
Window.settimeout (' doupdate (' + i + ') ', (secs-i) * 1000);
}
}
function doupdate (num)
{
document.getElementById (' msg '). InnerHTML = ' You have exited login, will return ' in ' + num + ' seconds;
if (num = = 0) {Window.location=url}
}
</script>
<body>
<form id= "Form1" runat= "Server" >

<div id= "msg" style= "margin:20px auto;" ></div>

<script language= ' javascript ' type= ' Text/javascript ' >
Load ("<% = Getreturnurl ()%>");

<!---the ASP.net method called here, you can also write the URL address directly here-->
</script>


</form>
</body>

===========logout.aspx.cs page ============================

protected void Page_Load (object sender, EventArgs e)
{
Session.clear ();
Session.removeall ();
System.Web.Security.FormsAuthentication.SignOut ();
}

        protected String Getreturnurl ()
         {
            if (string. IsNullOrEmpty (request.querystring["ReturnUrl"]))
             {
                return "/";  
           }
             Else
             {
                return request.querystring["ReturnUrl"];
           }
       }

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