Catch iframe exceptions

Question

When I set the src attribute on an iframe, sometimes an error is logged to the console (seems to be an uncaught exception), and the destination never loads.

For example, if I set myiframe.src = 'http://www.google.com', it just never loads and my Chrome developer tools will log the following message:

Refused to display document because display forbidden by X-Frame-Options.

I understand what this error is, but I want to catch this exception so I can handle it when a website doesn't want to be loaded into an iframe.

Because setting an iframe src is semi-asynchronous, I can't just surround that line with a try catch.

How do I handle iframe errors? iframe.onerror and iframe.onabort don't seem to do the trick either.

Alternatively you could XmlHttpRequest and inject the response into the iframe with document.write.. — smrtl, May 03 '13 at 17:17
http://stackoverflow.com/questions/6666423/overcoming-display-forbidden-by-x-frame-options this may be help you — Naitik, Apr 21 '15 at 07:56
so, to add here, iframe doesn't trigger onerror upon having an error, error handling has to be done in an onload handler as per https://javascript.info/onload-onerror#other-resources ` Only load event when the iframe loading finished. It triggers both for successful load and in case of an error. That’s for historical reasons.` — Gonçalo Vieira, Jul 05 '17 at 09:09

score -1 · Answer 1 · edited May 23 '17 at 12:30

-1

Take a look at:

https://developer.mozilla.org/en/DOM/window.onerror

This is essentially a global, fallback error handler. Google around a bit for more information on how to use this one, but note that there are cross-browser compatibility issues with this approach that you must address, particularly the IE browser family.

This may or may not work well with IFRAME elements, so YMMV.

UPDATE:

Take a look at this question.

How to catch JavaScript errors in all Iframes (with window.error)?

edited May 23 '17 at 12:30

Community

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answered Jul 14 '12 at 05:32

Lior Cohen

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`window.onerror` doesn't seem to catch it. Also, like I mentioned on the post, `iframe.onerror` doesn't get it either :( – Chuck Jul 14 '12 at 20:12
I'll try playing around with this and update if I find anything interesting. – Lior Cohen Jul 14 '12 at 22:19
Unfortunately, window.onerror doesn't catch it. – Karen Fisher Sep 15 '15 at 18:07

Catch iframe exceptions

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