jquery - cannot get the web service response -

I definitely make a very lame mistake but can not find that ...

Here's my web method [WebMethod] [ScriptMethod (UseHttpGet = true, ResponseFormat = ResponseFormat.Json)] Add public int (int x, int y) {return x + y; }

and calling it through AJAX like this

  $ .ajax ({type: "GET", datatype: 'Jason', Content type: "Application / Jason; Character symbol = UTF-8", Data: {x: 4, y: 5}, URL: 'http: // localhost: 14436 / service 1. command / add', success: function ( Data) {warning ('success'); var d = $ (data); console.log (d);}});   
 The problem is that I can not display the returned data in Fideller in  success ,  
  {"d" : 9}  but I'm dropping  data  ... what I'm doing wrong here ... TIA   
  Edit   
 My web service and my web application is where From the web service  
 so I think it requests a cross domain?   
 
 
 Try the following function:  
  function Ajax succeeded (result ) {Warning (Results D); }   
 Still no results? 
 Update: 
 You You can read more about the D cover: 
  
 This is the sample you are trying to get: