jquery: different response type

I have a AJAX post method that gets xml data from server. But when user session is over server will response with login page. And in that case I can't dete开发者_如何学运维ct if response in not xml because $.post don't call callback function.

How can I detect if response is not xml ?

Thanks!

instead of using $.post, use $.ajax and set type: 'POST'.

You can then do callbacks on all sorts of events, see http://api.jquery.com/jQuery.ajax/ for all details. Your calls will most likely be easy to convert.

$.post has less features than $.ajax, but internally it uses $.ajax to do the real work.

Try to skip specifying dataType in $.post(), then you should get any kind of data and validate yourself if its XML or something else...