Ext.Ajax.Request returns always zero

Hi,

Ext.Ajax.Request always returns status as zero.

I had captured the error via Ext.Ajax.on('requestexception' function(){...});

i.e

Exception: {"requestId":7,"statusText":"","status":0}



But chrome browser shows the below error,

XMLHttpRequest cannot load http://ift.tt/1AEH4JE. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://127.0.0.1:55245' is therefore not allowed access. The response had HTTP status code 500.

Logger.js?_dc=1419357489312:70

Any reason why we are unable to get the status code as 500 in the exception function. Instead it shows always zero?

Ext.Ajax.Request returns always zero