Thursday, December 17, 2009

How to dynamically adjust an iframe’s height?

I was looking to display content of the other aspx page inside iframe but i wasnt able to adjust the height of the iframe. so try out this solution to resolve it.

Insert iframe on page
   <iframe scrolling='no' frameborder='0' id='frmid' src=’getad.aspx'
            onload='javascript:resizeIframe(this);'>
   </iframe>


Use this javascript to resize iframe based on the height & width of child page




<script language="javascript" type="text/javascript">
 function resizeIframe(obj)
 {
   obj.style.height = obj.contentWindow.document.body.scrollHeight + 'px';
   obj.style.width = obj.contentWindow.document.body.scrollWidth + 'px';
 }
 </script>


What does this code do? When the body of the parent frame loads, it looks up the document element “childframe” which corresponds to the iframe. Then the page calls a function resizeFrame(). The function sets the height of the frame to be the scrollHeight, which effectively removes the scrollbar.

happy programming!

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