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Editorial Team
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Asked: 2026-05-22T15:14:51+00:00

This standard code for an IFRAME, is there a way to replace the src

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This standard code for an IFRAME, is there a way to replace the src URL with Just html code? so my problem is simple, I have a page it loads an HTML body from MYSQL I want to present that code in a frame so it renders it self independent of the rest of the page and in the confines of that specific bordering.

<iframe src="http://example.com" name="test" height="120" width="600">You need a Frames Capable browser to view this content.</iframe>
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1 Answer

  1. Editorial Team

    You can do this with a data URL. This includes the entire document in a single string of HTML. For example, the following HTML:

    <html><body>foo</body></html>

    can be encoded as this:

    data:text/html;charset=utf-8,%3Chtml%3E%3Cbody%3Efoo%3C/body%3E%3C/html%3E

    and then set as the src attribute of the iframe. Example.

    Edit: The other alternative is to do this with Javascript. This is almost certainly the technique I’d choose. You can’t guarantee how long a data URL the browser will accept. The Javascript technique would look something like this:

    var iframe = document.getElementById('foo'),
    iframedoc = iframe.contentDocument || iframe.contentWindow.document;

iframedoc.body.innerHTML = 'Hello world';

    Example

    Edit 2 (December 2017): use the Html5’s srcdoc attribute, just like in Saurabh Chandra Patel‘s answer, who now should be the accepted answer! If you can detect IE/Edge efficiently, a tip is to use srcdoc-polyfill library only for them and the “pure” srcdoc attribute in all non-IE/Edge browsers (check caniuse.com to be sure).

    <iframe srcdoc="<html><body>Hello, <b>world</b>.</body></html>"></iframe>
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