jQuery post respond with readyState:0, status:0

Question

all. I am using a jquery version 1.6.2. I do a ajax call like this:

  var jqxhr = $j.post(myPHP, function() {
          alert(\"success\");
        })
               


        

Answer 1

For me this problem was caused by a cross-domain issue. So I had a local html file (c:\test.html) and tried to get data from a server (localhost/servlet). When putting html on the server - the problem was gone.

Answer 2

In my case, it was not due to Cross domain. I was not using e.PreventDefault(). See here

Answer 3

If the browser switches the web page while an XHR request is still in progress (the user clicked a link, the back button, …), this XHR request will be cancelled with exactly your error.

Have a look at the following blog post, where the issue is explained in depth: http://bartwullems.blogspot.de/2012/02/ajax-request-returns-status-0.html

Answer 4

You forgot to tell jQuery that the server is returning JSON:

   var jqxhr = $j.post(myPHP, function() {
           alert("success");
         }, "json") // here
        .success(function() { alert("second success"); })
        .error(function(data) { alert(JSON.stringify(data)); })
        .complete(function() { alert("complete"); });