Capturing event user leaving page

Z

Zvonko

Hi!

Is it possible to capture an event when user leaves the page and
execute some code? Not when he closes the window.

Any ideas?
 
D

Dag Sunde

Zvonko said:
Hi!

Is it possible to capture an event when user leaves the page and execute
some code? Not when he closes the window.

Any ideas?
Click to expand...

<head>
<script type="text/Javascript">
function yourFunction() {
alert("About to leave...");
}
</script>

<body onunload="yourFunction();">
...
</body>
 
R

Randy Webb

Dag Sunde said the following on 9/2/2005 9:53 AM:
<head>
<script type="text/Javascript">
function yourFunction() {
alert("About to leave...");
}
</script>

<body onunload="yourFunction();">
...
</body>
Click to expand...

Are you positive that the alert will get fired when the page is left?

Power goes off, no alert......

Besides, I left. Why do you want to annoy me further with alerts, I
left, leave me be in peace.
 
D

Dag Sunde

Randy Webb said:
Dag Sunde said the following on 9/2/2005 9:53 AM:


Are you positive that the alert will get fired when the page is left?

Power goes off, no alert......
Click to expand...
LOL

Of course I'm not sure. But the OP didn't specify nuclear strikes or
power outages. (And I *do* have an UPS). :D
Besides, I left. Why do you want to annoy me further with alerts, I left,
leave me be in peace.
Click to expand...

Couldn't agree more.

But Now I have informed him how to do it (Not taking power failures
into account), and you have told him why he shouldnt. All we can do
now is to hope he use the knowledge and advice wisely.
 
B

bgulian

I would add that onUnload is fired when, really, the user has already
left (The request for a new page has already been sent to the server).
IE has onBeforeUnload which will actually catch the user before they
have issued the request although I doubt this is available for Firefox
or much else.

--------- beegee
 
G

Gérard Talbot

I would add that onUnload is fired when, really, the user has already
left (The request for a new page has already been sent to the server).
IE has onBeforeUnload
Click to expand...

and Mozilla 1.7, Seamonkey 1.x and Firefox 1.x all have onbeforeunload
too since March 2004.

which will actually catch the user before they
have issued the request although I doubt this is available for Firefox
or much else.
Click to expand...

Gérard
 
Z

Zvonko

Randy said:
Are you positive that the alert will get fired when the page is left?

Power goes off, no alert......

Besides, I left. Why do you want to annoy me further with alerts, I
left, leave me be in peace.
Click to expand...

Hi Randy.

I don't want to bother bother my visitors. The idea is that when the
user leaves the page to automatically log him off. I want that if the
user hit the Back button on the browser his session is timeouted and he
must login to access the page. Is this possible?
And if you have a web with multiple pages, how to implement the idea
with onunload? It would trigger the logoff even if the user is going to
another page inside the web site, and I don't want that. I would like to
log him off only when he is leaving the site.

Thanks for the answer.

Bye
 
R

Randy Webb

Zvonko said the following on 9/5/2005 2:14 AM:
Hi Randy.

I don't want to bother bother my visitors. The idea is that when the
user leaves the page to automatically log him off. I want that if the
user hit the Back button on the browser his session is timeouted and he
must login to access the page. Is this possible?
And if you have a web with multiple pages, how to implement the idea
with onunload? It would trigger the logoff even if the user is going to
another page inside the web site, and I don't want that. I would like to
log him off only when he is leaving the site.

Thanks for the answer.
Click to expand...

You use server-side sessions and timeouts.
 
E

ExGuardianReader

Zvonko said:
I don't want to bother bother my visitors. The idea is that when the
user leaves the page to automatically log him off. I want that if the
user hit the Back button on the browser his session is timeouted and he
must login to access the page. Is this possible?
And if you have a web with multiple pages, how to implement the idea
with onunload? It would trigger the logoff even if the user is going to
another page inside the web site, and I don't want that. I would like to
log him off only when he is leaving the site.

Thanks for the answer.
Click to expand...

We have this problem too.

Our web server talks to a back end server that is written in a legacy
3GL with a contrived remote call facility which is licensed per session.
It's a monothread language, and the whole setup uses convoluted gobbets
of global data shared between *hundreds* of functions (it's *years*
old), so one web session consumes one back end server session for its
duration.

It's imperative that whenever a user closes their browser or navigates
away that the back end server session is closed down.

They have implemented the front page of the application as a frameset
(shudder!) with one frame in it - the application's login page. The
frameset has an onunload() method which pops up a window using
window.open("logout.jsp"). The logout.jsp closes the back end session
and sends a "window.close()" script to close the popped-up window. All
navigations within the app take place *within* the frame, so the
onunload is not triggered until the browser is closed or a new URL is
entered into the navigation bar.

I know, I know - it's ugly and unreliable (sudden power outages), but
it's what was there when I arrived, I've just tidied it up and made it a
little more reliable than it was.

I have thought of changing the method and implementing some kind of
"heartbeat" using window.setInterval() in every page's "onload" method
(we have a custom tag library which is used to create the page layout
which could do this), and XMLHttpRequest which sends an "I'm still here"
request every 10 seconds or so. The session would then have a
java.util.TimerTask scheduled to close the session down which would be
cancelled and re-scheduled upon receipt of that request.

Either way, it's not *really* supported, and it's going to be a hack.

Good luck, and post back your implemented solution.

Nige
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Similar Threads

User IP address 2
What is `transaction`event 0
Child/opener page sometimes returns a blank page after reloading/refreshing the same child/opener in JavaScript 2
Bash scripts for web apps 1
Problem with a login script, SESSION user rights and put this together so it works with the other pages and MySQL. Code examples. 2
Detecting user leaving page 4
How do I capture the open-in-new-window/tab event? 3
A website that I couldn't make a screenshot of it nor save any page from. 1

Members online

No members online now.
Total: 80 (members: 0, guests: 80)
Robots: 454

Forum statistics

Threads
473,995
Messages
2,570,230
Members
46,819
Latest member
masterdaster

Latest Threads

Top