Prevent "Are you sure you want to leave?" Javascript in Iframe from blocking top-level links

Asked Dec 31 '15 at 16:29

Active Dec 31 '15 at 18:31

Viewed 919 times

Currently some of my users visit another website through an iframe.

Often the site they visit through the iframe gives them an annoying "are you sure you want to leave this site?" message when someone clicks a link on my site to go to another page.

Now, I realise that I cannot control javascript on the other person's site due to cross-domain security.

But surely, because they are clicking a link on my site, I should be able to stop it triggering javascript on the iframe site? Or at least be able to move onto the next page without my users being upset and blaming my domain.

Here is what I need to disable at my top level:

window.onbeforeunload = "Are you sure you want to leave my anti social website?";

All I want is for visitors to be able to click a link on my site without being disturbed by the iframe.

edited Dec 31 '15 at 18:12

asked Dec 31 '15 at 16:29

Amy Neville

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Check this : http://stackoverflow.com/questions/19348572/suppress-the-are-you-sure-you-want-to-leave-this-page-popup-in-the-delphi-tweb – George-Cristian Dec 31 '15 at 16:31
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You can try to use sandbox for iFrame http://www.html5rocks.com/en/tutorials/security/sandboxed-iframes/ – jcubic Dec 31 '15 at 16:36
@George-Cristian I'm looking now. There seems to be a script to reset the event handler? Is that javascript? How would I use it? – Amy Neville Dec 31 '15 at 16:36
@jcubic that looks interesting - does it work on all browsers? – Amy Neville Dec 31 '15 at 16:38
@George-Cristian that's a completely different situation; the browser in that case is being used as a component by another piece of software. This question is about how a *site* can control how an ordinary browser works. – Pointy Dec 31 '15 at 16:38
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http://caniuse.com/#search=sandbox – jcubic Dec 31 '15 at 16:41
@jcubic 90% coverage sounds pretty good. Would be nice if I could combine it with another approach to make it as close to 100% as possible though.... – Amy Neville Dec 31 '15 at 16:46
@jcubic I solved it......I solved something :DDD – Amy Neville Dec 31 '15 at 18:13
Hello, I'm working on the same problem. What was your solution? – FelisPhasma Oct 28 '16 at 01:19

Prevent "Are you sure you want to leave?" Javascript in Iframe from blocking top-level links

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