481631 - Ajax onreadystatechange handler is not called

Status: RESOLVED DUPLICATE of bug 480807

(Core :: DOM: Events, defect)

Description

[Sergey Zh]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1b3pre) Gecko/20090304 Shiretoko/3.1b3pre
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1b3pre) Gecko/20090304 Shiretoko/3.1b3pre

after sending Ajax POST request, onreadystatechange handler is not called,
though firebug shows, that all data arrived.
However when I click on external link, to leave the page - 
onreadystatechange is called.


Reproducible: Always

Steps to Reproduce:
approximately:
1. var req = new XMLHttpRequest(); 
2. req.open("POST", mystr, true); 
3. req.onreadystatechange = ajax_callback
4. req.send( mydata );

function ajax_callback(evt)
{
   alert("ajax_callback"); // shows only when leaving the  page
   ...
   ... // lots of other code
}


Expected Results:  
callback handler call when data arrives.

This bug does NOT exist in Fx 3.1 beta2 or Minefield Gecko/20090305 Minefield/3.2a1pre;

Comment 1

[Olli Pettay [:smaug][[e-mail]]]

This sounds a lot like bug 480807.

Comment 2

[Michael Kohler [:mkohler]]

feel free to undupe if it's not bug 480807