How to Dynamically Resize an Iframe to Fit its Content?

How to Dynamically Adjust Iframe Height Based on Content

In scenarios where an iframe's content exceeds its height limit, it is essential to dynamically adjust its size to accommodate the excess content. This can be achieved using a combination of JavaScript and JQuery.

To retrieve the height of the iframe's content, utilize the following code:

contentWindow.document.body.scrollHeight

Once the iframe is loaded, resize it dynamically using:

function iframeLoaded() {
  var iFrameID = document.getElementById('idIframe');
  if (iFrameID) {
    // Delete and recreate the height to ensure proper resizing
    iFrameID.height = "";
    iFrameID.height = iFrameID.contentWindow.document.body.scrollHeight + "px";
  }
}

Include an "onload" event handler in the iframe tag:

<iframe>

To handle dynamic resizing after form submissions within the iframe, include the following code in the iframe's content scripts:

parent.iframeLoaded();

This approach ensures that the iframe's height is adjusted dynamically to accommodate all content, eliminating the need for scroll bars and maintaining a fluid user experience across different browsers.

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