I have developed a service which is running successfully. Following is my service code:

namespace WcfService1
{   
[ServiceContract]
public interface IService1
{
    [OperationContract]
    [WebInvoke(Method="GET", ResponseFormat = WebMessageFormat.Json, BodyStyle=WebMessageBodyStyle.Wrapped, UriTemplate="/display/{a}/{b}")]        
    string Display(string a, string b);        
} 
}

My Service:

namespace WcfService1
{
 public class Service1 : IService1
{
    public string Display(string a, string b)
    {
        int ab = Convert.ToInt32(a);
        int bc = Convert.ToInt32(b);
        int cb = ab + bc;
        return cb.ToString();
    }
}
}

How do i call this with the help of ajax url? I have tried out the following code but it is not working.

<script type="text/javascript">
    $(document).ready(function () {
        $('#BtnRegister').click(function () {
            debugger;

            var No1 = document.getElementById('TxtFirstNumber').value;
            var No2 = document.getElementById('TxtSecondNumber').value;

            $.ajax({
                cache: false,
                type: "GET",
                async: false,
                url: "http://localhost:22727/Service1.svc/Display",
                data: 'a=' +No1+'&b='+No2,
                contentType: "application/json; charset=ytf-8",
                dataType: "json",
                processData: true,
                success: function (result) {
                    alert("data");
                },
                error: function (xhr, textStatus, errorThrown) { alert(textStatus + ':' + errorThrown); }
            });
        });
    });
</script>