301 redirect on AJAX -- redirected?

Question

I have an AJAX call to a server endpoint that does a 301 redirect to the same page, but with a trailing slash.

Does the browser follow redirects when called with AJAX or does it ignore them? In my case it doesn't follow them, but I figured it might be something from the server config.

score 4 · Accepted Answer · edited May 23 '17 at 12:24

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If you are using jquery you could look at the questions below to implement it. By default jQuery (and most libraries with Ajax) don't follow redirects by default:

How to manage a redirect request after a jQuery Ajax call

How to prevent ajax requests to follow redirects using jQuery

handle jquery ajax redirect

edited May 23 '17 at 12:24

Community

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answered Sep 12 '12 at 10:47

Pez Cuckow

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OK so jQuery doesn't follow redirects, I see. Thanks. – Eduard Luca Sep 12 '12 at 10:54
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Um, no. XHR will transparently follow redirects. – Will Morgan Jun 14 '13 at 16:01
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Not in all cases. I've got a 301 redirect setup and FF doesn't follow them. Chrome does, however. – threejeez Nov 19 '13 at 22:15
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This doesn't even attempt to answer the question as asked. It talks about a library that isn't at all relevant to the actual question. Even then it's vague and relies way too heavily on links. – Jasper Oct 14 '17 at 22:39

score 4 · Answer 2 · answered May 01 '14 at 05:57

Maybe this answer is a little bit late but i had the same problem with 301 response on ajax request. The solution was quite simple:

apache rewrite rule is something like this:

RewriteRule ^([^/]\w+)/?$ index.php?%{QUERY_STRING} [L,E=MODULE:$1]

Your XHR-Request url looks someting like this:

/this/is/a/canonical/url + '?param=1&param=2...'

It will lead to the 301 moved permanently if you dont use a direct file call (f.i. *.php) and rewrite to canonical URL (looks like a directory-path without f.i. *.php) instead.

To solve this problem just add a / to your XHR-Request-URL like this:

/this/is/a/canonical/url + '/' + '?param=1&param=2...'

Maybe this will help someone.

score 2 · Answer 3 · answered Oct 31 '14 at 02:11

I also had this problem and the suggestion about the trailing slash got me thinking ... I had a rewrite rule in my Web.Config to make everything lowercase and that's what was messing up my AJAX call. I was POSTing to GetResults (which showed up as a 301) and my rewriter (for some unknown reason?) was changing it to a lower-cased getresults GET which resulted in a 404.

Hope this might help someone else.

score -1 · Answer 4 · answered Jul 28 '14 at 09:23

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According to jQuery's API doc (http://api.jquery.com/jQuery.ajax/), async:false (aka. sync mode) does not support cross-domain and dataType: "jsonp" requests.

answered Jul 28 '14 at 09:23

GlacJAY

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Sorry, but what does this have to do with the question? – Eduard Luca Jul 28 '14 at 12:34
@EduardLuca I'm sorry, your redirection does not cross the domain. – GlacJAY Jul 31 '14 at 03:20
I don't need to cross to another domain, the redirect happens on the same URL but with a trailing slash. – Eduard Luca Aug 01 '14 at 08:27

301 redirect on AJAX -- redirected?

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