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How To Adjust IFrame Height on Its Content

, 6 Jul 2007
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How to adjust an iFrame height to its content: tested in Mozilla, Opera, Internet Explorer

Introduction

Some browsers do not support all W3C standards and you will face a problem when you want to adjust IFrame height on its content using JavaScript. I have spent some hours experimenting with different DOM-objects and I have found quite a good solution for Mozilla, Internet Explorer and Opera browsers.

Using the Code

If you have IFrame in your HTML, the first step is to add onload handler as follows:

<iframe id='myFrame' 

frameborder=0 scrolling=no width=100%  

src="..."
    onload='adjustMyFrameSize

();'> 
</iframe> 

Then you need to place such a script BEFORE the IFrame element:

 <script type="text/javascript">
    
    function getElement(aID)
    {
        return (document.getElementById) ?
            document.getElementById(aID) : 

document.all[aID];
    }

    function getIFrameDocument(aID){ 
        var rv = null; 
        var frame=getElement(aID);
        // if contentDocument exists, W3C 

compliant (e.g. Mozilla) 
        if (frame.contentDocument)
            rv = frame.contentDocument;
        else // bad Internet Explorer  ;)
            rv = document.frames[aID].document;
        return rv;
    }

    function adjustMyFrameHeight()
    {
        var frame = getElement

("myFrame");
        var frameDoc = getIFrameDocument

("myFrame");
        frame.height = frameDoc.body.offsetHeight;
    }
</script>

History

  • 6th July, 2007: Initial post

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

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About the Author

meglio
Web Developer
Ukraine Ukraine
No Biography provided

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Comments and Discussions

 
GeneralMy vote of 4 Pin
amanalam14-Oct-10 3:04
memberamanalam14-Oct-10 3:04 
QuestionDoesn't work? Pin
Ben Adler14-Sep-10 7:52
memberBen Adler14-Sep-10 7:52 
Generalserver iframe Pin
Pavel Yermalovich10-May-10 11:16
memberPavel Yermalovich10-May-10 11:16 
Generalrunat="server" Pin
Pavel Yermalovich10-May-10 11:09
memberPavel Yermalovich10-May-10 11:09 
Generalrunat="server" Pin
Pavel Yermalovich10-May-10 11:06
memberPavel Yermalovich10-May-10 11:06 
GeneralOnly IE Pin
DanGetz22-Aug-09 20:47
memberDanGetz22-Aug-09 20:47 
GeneralI had to make a change for IE8 Pin
DanGetz22-Aug-09 19:55
memberDanGetz22-Aug-09 19:55 
GeneralGreat Job Pin
Member 39633857-Jul-09 5:09
memberMember 39633857-Jul-09 5:09 
GeneralDoesn't get smaller Pin
pinow17-Apr-09 0:45
memberpinow17-Apr-09 0:45 
Generalfunction improvement Pin
lanello9-Mar-09 2:19
memberlanello9-Mar-09 2:19 
GeneralSmall Typo Pin
The JZ28-Oct-08 8:17
memberThe JZ28-Oct-08 8:17 
Generalissue Pin
_test_123_16-Jul-07 22:35
member_test_123_16-Jul-07 22:35 
Beside from function name confusion, height is a style and offsetHeight doesn't work in IE, so in order to get the code above to work one should better type:
"frame.style.height = frameDoc.body.scrollHeight+'px';"
regards








GeneralRe: issue Pin
meglio16-Jul-07 23:29
membermeglio16-Jul-07 23:29 

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