Make iframe automatically adjust height according to the contents without using scrollbar? [duplicate]

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天命终不由人

2020-11-22 06:23

You can use this library, which both initially sizes your iframe correctly and also keeps it at the right size by detecting whenever the size of the iframe's content changes (either via regular checking in a setInterval or via MutationObserver) and resizing it.

https://github.com/davidjbradshaw/iframe-resizer

Their is also a React version.

https://github.com/davidjbradshaw/iframe-resizer-react

This works with both cross and same domain iframes.

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太阳男子

2020-11-22 06:23
The suggestion by hjpotter92 does not work in safari! I have made a small adjustment to the script so it now works in Safari as well.

Only change made is resetting height to 0 on every load in order to enable some browsers to decrease height.

Add this to <head> tag:
```
<script type="text/javascript">
  function resizeIframe(obj){
     obj.style.height = 0;
     obj.style.height = obj.contentWindow.document.body.scrollHeight + 'px';
  }
</script>
```
And add the following onload attribute to your iframe, like so
```
<iframe onload='resizeIframe(this)'></iframe>
```
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故里飘歌

2020-11-22 06:23
This works for me (also with multiple iframes on one page):
```
$('iframe').load(function(){$(this).height($(this).contents().outerHeight());});
```
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广开言路

2020-11-22 06:23

This works for me (mostly).

Put this at the bottom of your page.

<script type="application/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js">
</script>

<script type="application/javascript" src="/script/jquery.browser.js">
</script>

<script type="application/javascript" src="/script/jquery-iframe-auto-height.js">
</script>

<script type="application/javascript"> 
  jQuery('iframe').iframeAutoHeight();
  $(window).load(
      function() {
          jQuery('iframe').iframeAutoHeight();  
      }
  );

  // for when content is not html e.g. a PDF
  function setIframeHeight() {
      $('.iframe_fullHeight').each(
          function (i, item) {
              item.height = $(document).height();
          }
      );
  };

  $(document).ready( function () {
      setIframeHeight();
  });
  $(window).resize( function () {
      setIframeHeight();
  });
</script>

The first half is from ???, and works when there is html in the iframe. The second half sets the iframe to page height (not content height), when iframes class is iframe_fullHeight. You can use this if the content is a PDF or other such like, but you have to set the class. Also can only be used when being full height is appropriate.

Note: for some reason, when it recalculates after window resize, it gets height wrong.

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孤街浪徒

2020-11-22 06:23

function autoResize(id){
    var newheight;
    var newwidth;

    if(document.getElementById){
        newheight=document.getElementById(id).contentWindow.document.body.scrollHeight;
        newwidth=document.getElementById(id).contentWindow.document.body.scrollWidth;
    }

    document.getElementById(id).height=(newheight) + "px";
    document.getElementById(id).width=(newwidth) + "px"; 
}

add this to your iframe: onload="autoResize('youriframeid')"

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既然无缘

2020-11-22 06:25

Add this to your <head> section:

<script>
  function resizeIframe(obj) {
    obj.style.height = obj.contentWindow.document.documentElement.scrollHeight + 'px';
  }
</script>

And change your iframe to this:

<iframe src="..." frameborder="0" scrolling="no" onload="resizeIframe(this)" />

As found on sitepoint discussion.

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