Ajax call to a web method does not give response

Hi,

I am calling a javascript method from the click of a link:

');"><%# Eval("projectIdentifier") %>

The javascript:

 

As you can see, the Ajax call is to a web method HelloWorld() which is inside an asmx page:

  [WebMethod]
        public string HelloWorld()
        {
            return "Hello World";
          
        }
 
I do not get a response from the web method. When I try to debug the method by putting a break point, I see that the method is being 'hit'.

But the problem is that the response does not go back to the javascript function. I dont even get an error (OnError() does not give a result).

I tried inspecting the 'onclick' element from the browser and no help from there as well.

Am I missing some settings somewhere. Any kind of help is greatly appreciated.

Regards,
Pranjal