How to get jQuery/AJAX final URL

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+2 Q:

How to get jQuery/AJAX final URL

When I run $.get or .load in jQuery, the request seems to follow 302 redirects perfectly fine and gives me ultimate response, which I can use in the callback for $.get or which plugs into the this element for .load.

While I obviously have the original URL since I am in control of the string that's entered as the first argument in $.get or .load (it would also be helpful if I could get this directly in the callback to simplify things), how can access the final (after redirect) URL in the callback?

I suspect that it would be in the XMLHttpRequest object, for which I have found the specification.

+1 A:

I'm not sure (and Googling hasn't gotten me anywhere), but what about this unorthodox solution? var hiddenIframe = $('').attr({ style: 'display: none;' }).appendTo('body'); hiddenIframe.attr({ src: 'http://www.direct-me.com' }); hiddenIframe.load(function() { alert(hiddenIframe.attr('src')); }); Basically it just makes a hidden iframe, and then goes to your URL, and the callback for load *should* tell you the final URL.

It appears you cannot. You can get the original src, but then you cannot due to security issues.

alex 2010-06-22 13:35:44

Is there any reason you're convinced why this is impossible? After all, I understand that you can get the response headers anyway (http://www.w3.org/TR/XMLHttpRequest/#the-getallresponseheaders-method), so it doesn't seem as if the browser prevents you from accessing that information. Also, cross site security prevents you from making an AJAX request to, say http://facebook.com/delete-my-profile, but I don't see why it would be involved here.

Steven Xu 2010-06-22 14:08:03

@Steven I'm not convinced, and I hope someone proves me otherwise.

alex 2010-06-22 14:17:35

I'm using Rails, which uses the `redirect_to` method to stop script execution and deliver the location header. I redefined the function to send a text string containing a URL or URL segment in XHR cases or if an xhr=1 hidden variable is set (since, for instance, the Form plugin doesn't actually use an XHR request), and to parse the returned content client-side, redirecting if it parses as a URL. Semantically, it may be better just to custom define a header and send the redirect URL there, but this current approach hasn't produced complications and I presume has better compatibility.

Steven Xu 2010-06-29 13:50:17

ansaurus

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How to get jQuery/AJAX final URL

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