'XMLHTTPRequest is Undefined' IE6

Question

Hai guys, I got the error 'XMLHTTPRequest is Undefined' in IE6 when i load data via ajax to another drop down in php....

Answer 1

IE6 has no native support for XMLHTTPRequest however XMLHTTP is implemented as an ActiveX object provided by MSXML.

http://blogs.msdn.com/ie/archive/2006/01/23/516393.aspx

Answer 2

Most probably that's because in IE6 you'll have to create XMLHTTPRequest with ActiveXObject,

Like so:

   var xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");