make iframe height dynamic based on content inside- JQUERY/Javascript

Question

I am loading an aspx web page in an iframe. The content in the Iframe can be of more height than the iframe\'s height. The iframe should not have scroll bars.

I have

Answer 1

You can retrieve the height of the IFRAME's content by using: contentWindow.document.body.scrollHeight

After the IFRAME is loaded, you can then change the height by doing the following:

<script type="text/javascript">
  function iframeLoaded() {
      var iFrameID = document.getElementById('idIframe');
      if(iFrameID) {
            // here you can make the height, I delete it first, then I make it again
            iFrameID.height = "";
            iFrameID.height = iFrameID.contentWindow.document.body.scrollHeight + "px";
      }   
  }
</script>   

Then, on the IFRAME tag, you hook up the handler like this:

<iframe id="idIframe" onload="iframeLoaded()" ...

I had a situation a while ago where I additionally needed to call iframeLoaded from the IFRAME itself after a form-submission occurred within. You can accomplish that by doing the following within the IFRAME's content scripts:

parent.iframeLoaded();

Answer 2

Other answers were not working for me so i did some changes. Hope this will help

$('#iframe').on("load", function() {
    var iframe = $(window.top.document).find("#iframe");
    iframe.height(iframe[0].ownerDocument.body.scrollHeight+'px' );
});

Answer 3

I am using jQuery and the code below working for me,

var iframe = $(window.top.document).find("#iframe_id_here");
iframe.height(iframe.contents().height()+'px' );

Answer 4

just make iframe container position:absolute and iframe will automatically change its height according to its content

<style>
   .iframe-container {
       display: block;
       position: absolute;
       /*change position as you need*/
       bottom: 0;
       left: 0;
       right: 0;
       top: 0;
   }
   iframe {
       margin: 0;
       padding: 0;
       border: 0;
       width: 100%;
       background-color: #fff;
   }
 </style>
 <div class="iframe-container">
     <iframe src="http://iframesourcepage"></iframe>
 </div>

Answer 5

To add to the chunk of window that seems to cut off at the bottom, especially when you don't have scrolling I used:

function resizeIframe(iframe) {
    var addHeight = 20; //or whatever size is being cut off
    iframe.height = iframe.contentWindow.document.body.scrollHeight + addHeight + "px";
  }

Answer 6

$(document).height() // - $('body').offset().top

and / or

$(window).height()

See Stack Overflow question How to get the height of a body element.

Try this to find the height of the body in jQuery:

if $("body").height()

It doesn't have a value if Firebug. Perhaps that's the problem.