LOGOUT TIME CALCULATION ON BROWSER CLOSE



i have a login page for students .After the students login, their details such as UId,FNAMe,LNAME  and login time are entered into the database .After logging out their logout time is updated in the database(Enterprise Manager).
But some students logout after viewing their page by closing the browser window instead of clicking on the logout button.So their logout time is not shown in the database and it shows NULL.
What shud be done to capture the logout time of the students even when they close their window?

jaiswalpragyaAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

hongjunCommented:
you cannot accurately capture window close event
0
hongjunCommented:
0
hongjunCommented:
May wish to read these
http://www.experts-exchange.com/Web/Web_Languages/JavaScript/Q_20147672.html



<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>that</TITLE>
<SCRIPT LANGUAGE="JavaScript">
<!--
function RorC() {

var top=self.screenTop;
if (top>9000)
{alert('window was closed')}
else
{alert('window was Refreshed')}
}

//-->
</SCRIPT>

</HEAD>
<BODY BGCOLOR="#FFFFFF" onunload="javascript:if (document.all){RorC()} else {var top=window.outerWidth;if (top==0) {opener.alert('window was closed')} else {opener.alert('window was Refreshed')}}">
Your Body Here
</BODY>
</HTML>
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Tacobell777Commented:
I would do a check upon next login to see if they logged out last time, if not, I would display a nice big message explaining to them why they should log out (Security and all that) and give them a friendly reminder...

Thats about the best you can do.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Web Servers

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.