How to send data to restful wcf service

    .value is a property not an function
    You want to pass json use data of $.ajax
    
    if response data is not JSON you can use $.parseJSON to convertit to JSON

Complete Code

<script type="text/javascript">

$(document).ready(function(){  

 var uname = document.getElementById("uname").value;
 var password = document.getElementById("pwd").value;


 $('#ok').click(function(){  
     $.ajax({  
         url:'http://localhost:8090/LoginAuthRWS/rest/orders',  
         type:'post',  
         dataType: 'Json',

         data:{
           uname:uname,
           password:password
         },

         success: function(data) {  
             $('#name').val(data.name);  
             $('#email').val(data.email);
         }  
     });  
  });  
}); 

</script>