WCF Services using JavaScript

var baseUrl = "http://localhost:49997/SMD_WCFService/Service.svc?wsdl";

function sendData() {
    var json = '{"result":{"n1":"' + 1 + '"' + ', "n2":"' + 2 + '"}}';

    $.ajax(
    {
        type: "POST",
        contentType: "application/json; charset=utf-8",
        url: baseUrl,
        data: json,
        dataType: "json",
        success: function (data) { alert(data) },
        error: function () { alert("not done") }
    });

    // Another Serched Method
    var service = new Service.SMDService();
    var result = service.Add(1, 2);
    alert(result);
}