ExtJs Ajax apply returns

Ext.Ajax.request ({url: 'test.ashx',GHD Precious Gift Set, success: feature (param1,GHD IV Black Straighteners, param2) { ; cautious (param1.responseText);},GHD, method: 'POST',GHD Green Butterfly 2011, params: userid: 'testuserid', pwd : '123456 ' });

param1 and param2 , respectively :
response: Object
The XMLHttpRequest object embodying the response data.
options: Object
The parameter to the request shriek.

here response ( that is,GHD Red Straighteners, my in param1) type is Object,GHD Hair, and is XMLHttpRequest, XMLHttpRequest has 4 attributes of the data can be returned :
responseBody
behind into a format the server response data
responseStream
to Ado Stream object returns the response message
responseText
the rejoinder information returned as a string
respon######ML
will respond apt the information formatted as Xml Document thing and returns