jQuery使用json wcf C＃服务

Question

This is what my service looks like.
I have a class and an Interface. My services is exposed and I can call them via the wcftestClient tool.

Am I able to consume the web service like this with my jQuery ?

The problem I have is calling it in jQuery. It returns in JSON format. I get the following error in firebug.

Status Code: HTTP/1.1 404 Not Found

.cs

public static string Serialize(object obj)
        {

            if (obj == null)
            {
                string temp = "";
                temp = "";
                obj = temp;
            }

            var jsonSerializer = new DataContractJsonSerializer(obj.GetType());
            string returnValue = "";
            using (var memoryStream = new MemoryStream())
            {
                using (var xmlWriter = JsonReaderWriterFactory.CreateJsonWriter(memoryStream))
                {
                    jsonSerializer.WriteObject(xmlWriter, obj);
                    xmlWriter.Flush();
                    returnValue = Encoding.UTF8.GetString(memoryStream.GetBuffer(), 0, (int)memoryStream.Length);
                }
            }
            return returnValue;
        }

        public string HelloWorld()
        {
            return "Hello World";
        }

Interface

 [OperationContract]        
        string HelloWorld();

jQuery

 function GetService() {
                            var BizName = $('#txtBizName').val();
                            //alert(BizName);
                            $.ajax({
                                url: "http://www.website.com/WCFService/EdWebService.svc?HelloWorld",
                                type: "GET",
                                dataType: "json",                               
                                contentType: "application/json; charset=utf-8",
                                success: function(msg) {
                                    $('#status').html('Output: '+msg['d']['Id']);
                                },
                                error: function(e) {
                                    $('#status').innerHTML = "Unavailable";
                                }                               
                            });

                            alert(BizName);
                        }

Answer 1

You should replace url: "http://www.website.com/WCFService/EdWebService.svc?HelloWorld" with url: "http://www.website.com/WCFService/EdWebService.svc/HelloWorld" at first.

Reason: you are not calling HelloWorld method, instead you pass 'HelloWorld' as parameter (in a very wrong way) to some unknown method (I don't know to which method resolves service name without method specified) of your service.

Then it should work. Please update your question if it doesn't.