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Prevent a visitor from navigating away from curent page

Posted on 2011-09-06
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Last Modified: 2012-05-12
Hello and good day,

I have a web page with a html form in it.
The form has some mandatory fields too with submit button.
Now this is what i wanna achieve...
If a visitor arrives on this form page and tries to leave the page without submitting the form (either by typing a new url in address bar or by clicking back button) then the visitor should be prevented from navigating away from the form by displaying a small css html window (NOT the typical Javascript alert) with a message asking if visitor needs any assistance with a text area and 2 buttons (Yes button and Navigate away button). If he presses yes button then all that he types in the textarea will be submitted to website admin and if he wishes to navigate away from page he can by clicking on Navigate away button.

Can this be done?
If yes can you please upload a complete working code (a basic code at least)
Thanks
kansun
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Question by:kansun
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21 Comments
 
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Accepted Solution

by:
leakim971 earned 100 total points
ID: 36491514
>Can this be done?

Not really.
Do you want something working 100% of time?
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Assisted Solution

by:WalkaboutTigger
WalkaboutTigger earned 100 total points
ID: 36491554
<script language="JavaScript">
  window.onbeforeunload = confirmExit;
  function confirmExit()
  {
    return "You have attempted to leave this page.  If you have made any changes to the fields without clicking the Save button, your changes will be lost.  Are you sure you want to exit this page?";
  }
</script>

from

http://www.4guysfromrolla.com/demos/OnBeforeUnloadDemo1.htm?name=&age=

Modify the function to call the render the appropriate window
0
 
LVL 82

Expert Comment

by:leakim971
ID: 36491559
@WalkaboutTigger :

small css html window (NOT the typical Javascript alert)
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LVL 82

Expert Comment

by:leakim971
ID: 36491565
additionaly onbeforeunload don't work on all browsers.
0
 
LVL 19

Assisted Solution

by:moagrius
moagrius earned 200 total points
ID: 36491567
you can only use the traditional javascript modal dialog - you can't customize it.  the event is window.onbeforeunload, which is managed by the browser (and there's nothing you can do about it), but is the only thing that can interrupt a page exit.

here's a little info on it:  http://upshots.org/javascript/window-onbeforeunload
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LVL 16

Expert Comment

by:HagayMandel
ID: 36495035
It's the worst user experience you can provide!!
Do the best you can to attract visitors, but don't try to prevent them from navigating away!
0
 
LVL 29

Expert Comment

by:Badotz
ID: 36495808
You cannot force the user to do anything. If you make it difficult to leave, my guess is they will not be back.
0
 

Author Comment

by:kansun
ID: 36512802
Hi My friends,
I expected a solution. But i just got few advices here.
:-)) Can anyone provide a soln for this.... thx
0
 
LVL 29

Assisted Solution

by:Badotz
Badotz earned 100 total points
ID: 36512912
>>I expected a solution.

You cannot prevent the user from leaving your page. Worst case, she will close the browser window and never return to your site.

You can train your users on the proper way to exit your page, and explain the consequences for not doing so.
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LVL 19

Assisted Solution

by:moagrius
moagrius earned 200 total points
ID: 36512999
Badotz is correct.  Sometimes the answer is that there is no solution.

You can only interrupt page exit using window.onbeforeunload.  Doing so will result in a browser-generated modal dialog.  This cannot be replaced with an HTML fragment.

There's no other answer.
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Expert Comment

by:Badotz
ID: 36513049
And onbeforeunload may not be supported in all browsers.
0
 

Author Comment

by:kansun
ID: 36891884
I've requested that this question be deleted for the following reason:

no answers
0
 
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Expert Comment

by:Badotz
ID: 36891885
The answer is, "You cannot prevent the user from leaving."

What more do you want?

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Expert Comment

by:leakim971
ID: 36892071
99% of time for this question the member want a << solution >> not a << right answer >>...


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Expert Comment

by:Badotz
ID: 36892128
<waiting_for_the_envelope>
...and the solution is...
</waiting_for_the_envelope>
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Author Comment

by:kansun
ID: 36895092
thank you
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Expert Comment

by:WalkaboutTigger
ID: 36895173
There are no US-legal solutions to your question, unless you control the machine from which the user is browsing (like a kiosk machine).  I presumed from your question, however, that this was not the case.
0
 
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Expert Comment

by:Badotz
ID: 36895659
>>unless you control the machine from which the user is browsing (like a kiosk machine)

So, what is the "solution" in that case?
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