window.XMLHttpRequest is undefined in IE7/IE8

Question

Value of window.XMLHttpRequest is Undefined when i run my application even in IE7 or IE8, Is there anything i have to enable in IE7 to make it work.

Thanks

Answer 1

You can do something like this:

if (!window.XMLHttpRequest) {
  window.XMLHttpRequest = function() {
    return new ActiveXObject('Microsoft.XMLHTTP');
  };
}

I recommend looking at an AJAX library though, life is much easier in jQuery, ExtJS, MooTools, whatever you prefer.