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Page reloading info

Posted on 2011-09-17
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Last Modified: 2012-05-12
I there Any way that some part of our webpage don't get refreshed just like facebook chat on pageload............ It shud remain as it was....
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Question by:savsoft
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4 Comments
 
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Expert Comment

by:Gurvinder Pal Singh
ID: 36553680
Its ajax only. Page doesn't get reload, only that certain div gets reloaded.

Also, you can store the info in cookies, and fetch it when the page reloads again
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by:savsoft
ID: 36553718
gimme some related code please
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Gurvinder Pal Singh earned 2000 total points
ID: 36553721
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Expert Comment

by:dkellner
ID: 36556438
There are several ways to do that.
AJAX is typically for these kind of things, but there is another road to follow: IFRAME techniques.  If you use an IFRAME which is hidden (stzle="display:none"), you can push any request to the server and get whatever it gives back.  Basically, IFRAME is a small webpage inside of a webpage.

Try this:
- insert an IFRAME element, src="myalert.php"
- write myalert.php so that it prints "<script> alert(time()) </script>"
- now insert a BUTTON that reloads your iframe  - in javascript it's "myiframe.location.reload()"

You have a button now that goes to the server which returns the current timestamp.
It's a demonstration of a client-server connection, WITHOUT reloading the page itself.
No external libraries, no AJAX, no nothing.

Of course, AJAX can do more for you but it's more complex too.
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