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Resize iframe height according to resizable content

I have an iframe and I want to re-size the height according to the content which may resize if user makes certain actions.
I don't want a scroll bar so it appears as a normal page

Use a div instead of an iFrame. Try posting some sample code so we can help you more. Generally, you cannot resize an iframe based on its content.

scrollHeight is the major property to retrieve the height of the IFRAME's content like this:
contentWindow.document.body.scrollHeight
After the IFRAME is loaded, you can then change the height by doing the following:
<script type="text/javascript">
function resizeIframe() {
var iFrameID = document.getElementById('idIframe');
if(iFrameID) {
var cont = iFrameID.contentWindow.document.body || frame.contentDocument.body
// here you can make the height
iFrameID.height = cont.scrollHeight + "px";
}
}
</script>
On the IFRAME load event, you can call this function:
But sure..iframe should not be loaded from other website

Window height too long after ajax loaded content is resized in browser

We have created a responsive one page website that loads in chunks of content via ajax. When the main index page is resized to a smaller width (mobile size) and then adjusted back, the window does not adjust the height back to the original height of the conent and leaves a huge chunck of whitespace underneath and scrollbars that are too long.
Have tried adjusting the window size
<script>
$(window).resize(function() {
var bodyHeight = $(body).css(height, '100%');
$(window).height(bodyHeight);
});
</script>
and
window.resizeTo(width,height)
nothing seems to work, suggestions appreciated

Iframe height [dynamic] for every 2 second

my problem is when I load iframe it's set height of iframe correctly and also when data(content) load in iframe it;s automatically set height ,BUT when page load in iframe and set height relatively page content and then if I reduce or delete content from loaded page it will not reduce iframe height.(e.g when page load first time height set 100px and dynamically load data on page iframe height set to 150px and when I reduce data it's not set height of iframe it remain 150px). This is my code:
function setIframeHeight(iframe) {
if (iframe) {
var iframeWin = iframe.contentWindow || iframe.contentDocument.parentWindow;
if (iframeWin.document.body) {
iframe.height = iframeWin.document.documentElement.scrollHeight || iframeWin.document.body.scrollHeight;
}
setInterval("setIframeHeight_id('" + iframe.id + "')", 2000);
}
return false;
}
function setIframeHeight_id(iframeid) {
var iframe = document.getElementById(iframeid);
if (iframe) {
var iframeWin = iframe.contentWindow || iframe.contentDocument.parentWindow;
if (iframeWin.document.body) {
iframe.height = iframeWin.document.documentElement.scrollHeight || iframeWin.document.body.scrollHeight;
}
}
return false;
}
function resizeIframe(nm) {
setIframeHeight(document.getElementById(nm));
}
HTML
<iframe id="IframeData" scrolling="no" frameborder="0" width="100%" onload="resizeIframe('IframeData')" allowtransparency="true"></iframe>

I would highly suggest you to use jQuery instead of plain JavaScript. It won't do a miracle by itself, but will sure help you shorten your code.
When it comes to your problem, why not using percentage sizes instead of fixed pixel size? Let's say your iframe's height is set to 100%, instead of 150px. By doing this way, next time you resize the parent container, the iframe itself will stretch to parent's height.
I hope this helps.

Using Javascript to resize a div to screen height causes flickering when shrinking the browser window

The Background:
I tried to solve the StackOverflow question yet another HTML/CSS layout challenge - full height sidebar with sticky footer on my own using jQuery. Because the sidebar in my case may be longer than the main content it matches the case of comment 8128008. That makes it impossible to have a sidebar longer than the main content and having a sticky footer without getting problems when shrinking the browser window.
The status quo:
I have a html page with a div, which is automatically stretched to fill the screen. So if there is empty space below the element, I stretch it downwards:
But if the browser viewport is smaller than the div itself, no stretching is done but the scrollbar shows up:
I've attached jQuery to the window's resize event to resize the div, if the browser window is not to small and remove any resizing in the other case. This is done by checking if the viewport is higher or smaller than the document. If the viewport is smaller than the document, it seems like the content is larger than the browser window, why no resizing is done; in the other case we resize the div to fill the page.
if ($(document).height() > $(window).height()) {
// Scrolling needed, page content extends browser window
// --> No need to resize the div
// --> Custom height is removed
// [...]
} else {
// Window is larger than the page content
// --> Div is resized using jQuery:
$('#div').height($(window).height());
}
The Problem:
Up to now, everything runs well. But if I shrink the browser window, there are cases, where the div should be resized but the document is larger than the window's height, why my script assumes, that no resizing is needed and the div's resizing is removed.
The point is actually, that if I check the document's height using Firebug after the bug appeared, the height has just the value is was meant to have. So I thought, the document's height is set with a little delay. I tried to run the resize code delayed a bit but it did not help.
I have set up a demonstration on jsFiddle. Just shrink the browser window slowly and you'll see the div "flickering". Also you can watch the console.log() output and you will notice, that in the case of "flickering" the document's height and the window's height are different instead of being equal.
I've noticed this behavior in Firefox 7, IE 9, Chrome 10 and Safari 5.1. Can you confirm it?
Do you know if there is a fix? Or is the approach totally wrong? Please help me.

Ok -- wiping my old answer and replacing...
Here's your problem:
You are taking and comparing window and document height, without first taking into consideration the order of events here..
Window loads
Div grows to window height
Window shrinks
Document height remains at div height
Window height is less than div height
At this point, the previously set height of the div is keeping document height greater than the window height, and this logic is misinterpreted:
"Scrolling needed, no need to extend the sidebar" fires, erroneously
Hence the twitch.
To prevent it, just resize your div along with the window before making the comparison:
(function () {
var resizeContentWrapper = function () {
console.group('resizing');
var target = {
content: $('#resizeme')
};
//resize target content to window size, assuming that last time around it was set to document height, and might be pushing document height beyond window after resize
//TODO: for performance, insert flags to only do this if the window is shrinking, and the div has already been resized
target.content.css('height', $(window).height());
var height = {
document: $(document).height(),
window: $(window).height()
};
console.log('height: ', height);
if (height.document > height.window) {
// Scrolling needed, no need to externd the sidebar
target.content.css('height', '');
console.info('custom height removed');
} else {
// Set the new content height
height['content'] = height.window;
target.content.css('height', height['content']);
console.log('new height: ', height);
}
console.groupEnd();
}
resizeContentWrapper();
$(window).bind('resize orientationchange', resizeContentWrapper);
})(jQuery);
Per pmvdb's comment, i renamed your $$ to "target"

$(window).bind('resize',function(){
$("#resizeme").css("height","");
if($("#resizeme").outerHeight() < $(window).height()){
$("#resizeme").height($(window).height());
$("body").css("overflow-y","hidden");
}else{
$("body").css("overflow-y","scroll");
}
});

Maybe I am misunderstanding the problem, but why are you using Javascript? This seems like a layout (CSS) issue. My solution without JS: http://jsfiddle.net/2yKgQ/27/

iframe dynamic height resizing

Hi I currently have 2 pages (index.html and iframe_contents.html). Both are on the same domain.
I am currently trying to get the iframe to dynamically resize based on the contents size.
I was using this to assist me http://benalman.com/code/projects/jquery-resize/examples/resize/ and it works if the iframe_contents body tag gets larger or smaller on Firefox and IE 7/8/9 but for webkit it only can grow and can never shrink
I've narrowed it down to the body tag in iframe_contents.html not shrinking when content height changes but only in the iframe. When iframe_contents.html is not in a iframe if I shrink / enlarge elements the bodies overall height changes.
Is this a webkit specific issue?

After reading lots of answers here they all had the same issue with not resizing smaller when needed. I think most people are just doing a one-off resizing after the frame loads, so maybe don't care. I need to resize again anytime the window size changes. So for me, if they made the window narrow the iframe would get very tall, then when they make the window larger it should get shorter again. This wasn't happening on some browsers because the scrollHeight, clientHeight, jquery height() and any other height I could find with DOM inspectors (FireBug/Chrome Dev Tools) did not report the body or html height as being shorter after the iframe was made wider. Like the body had min-height 100% set or something.
For me the solution was to make the iframe 0 height, then check the scrollHeight, then set to that value. To avoid the scrollbar on my page jumping around, I set the height of the parent (that contains the iframe) to the iframe height to keep the total page size fixed while doing this.
I wish I had a cleaner sample, but here is the code I have:
$(element).parent().height($(element).height());
$(element).height(0);
$(element).height($(element).contents().height());
$(element).parent().height("");
element is my iframe.
The iframe has width: 100% style set and is inside a div with default styles (block).
Code is jquery, and sets the div height to the iframe height, then sets iframe to 0 height, then sets iframe to the contents height. If I remove the line that sets the iframe to 0 height, the iframe will get larger when needed, but never smaller.

This may not help you much but here is a function we have in what would be your iframe_contents.html page. It will attempt to resize the iframe in which it is loaded in a sort of self-resizing, cross-browserish, pure-JavaScript kind of way:
function makeMeFit() {
if (top.location == document.location) return; // if we're not in an iframe then don't do anything
if (!window.opera && !document.mimeType && document.all && document.getElementById) {
parent.document.getElementById('youriframeid').style.height = (this.document.body.offsetHeight + 30) + "px";
} else if (document.getElementById) {
parent.document.getElementById('youriframeid').style.height = (this.document.body.scrollHeight + 30) + "px"
}
}
You could put calls to it in a resize() event or following an event that changes the height of your page. The feature-testing in that method should separate out WebKit browsers and pick the correct height property.