write a javascript timer
requirement:
write a javascript timer: it should alert a dialog after certain timer, the dialog has two buttons. click one of them, the page will refresh automatically; click the other, nothing will happen.
deploy it on tomcat, and test it!
<html>
<head>
<title>Timer</title>
<script language="JavaScript">
<!--
var sessionTime = 7; //Total time of the BusinessObjects session
var alertTime = 5; //Time when pop up a alert dialog
var mm,ss;
var timer;
function alert_Timer()
...{
if(confirm("BusinessObjects session will be timeout in 5 minutes!"))
...{
clearInterval(timer);
window.location.reload();
}
else
...{
clearInterval(timer);
start_Timer();
}
}
function output_status()
...{
mm = Math.floor(sessionTime / 60);
ss = sessionTime % 60;
if( mm == 0)
...{
window.status = "BusinessObjects session will be timeout in " +ss + " seconds!";
if( ss == 0)
window.status = "BusinessObjects session is timeout!";
}
else
...{
window.status = "BusinessObjects session will be timeout in "+ mm + " minutes " + ss + " seconds";
}
}
function start_Timer()
...{
timer = setInterval("countTime();",1000);
output_status();
}
function countTime()
...{
sessionTime -= 1;
if(sessionTime == alertTime)...{
alert_Timer();
}
else if(sessionTime == 0)
...{
clearInterval(timer);
}
output_status();
}
-->
</script>
</head>
<body onLoad="start_Timer();">
</body>
</html>
