Question

I tried to call simple Web Method from JSON but I am getting errors.

In Chrome:

SyntaxError: unexpected token <

In Firefox:

SyntaxError: JSON.parse

Javascript code:

 $(document).ready(function() {
     $('#<%=ddlTest.ClientID %>').change(function() {
         var value = $('#<%=ddlTest.ClientID %>').val();
         var req = $.ajax({
             type: "POST",
             url: "Test.aspx/getTest",
             data: "{Id: '" + value + "'}",
             contentType: "application/json; charset=utf-8",
             dataType: "json",
             success: function(data) {
                 $(alert(data.d))
             },
             error: function(XMLHttpRequest, text, error) { alert(error); },
             failure: function(response) {
                alert(response.d);
             }
         })
    });
 });     

.aspx code:

<asp:DropDownList ID="ddlTest" AutoPostBack="false" runat="server">
    <asp:ListItem Value="0" Text="zero" />
    <asp:ListItem Value="1" Text="One" />
    <asp:ListItem Value="2" Text="Two" />
</asp:DropDownList>
<asp:Label ID="lblTest" runat="server" Text="hiii"/>

WebMethod:

[WebMethod] 
public static string getTest(string id)
{
    return id;
}

Please guide me…

Answer 1

I got the solution for my problem.
I just added fool. lines into my web.config file and its working fine now.

<httpModules>
  <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</httpModules>