jQuery Ajax POST using WebMethod in c#

Code Snippet:

UI:

<asp:Button ID="AjaxCall" runat="server" Text="Call Ajax" OnClientClick="AjaxCall1();" />

jQuery Ajax:

        function AjaxCall1() {

            debugger;

            $.ajax({

                type: "POST",

                url: "AjaxTest.aspx/TestAjaxCall",

                data: '{postParam: "Hello Ajax web method" }',

                contentType: "application/json; charset=utf-8",

                dataType: "json",

                async: true,

                success: function (response) {

                    alert("Success");

                },

                failure: function (response) {

                    alert("failure");

                }

            });

        }

c# WebMethod:

        [WebMethod]

        public static string TestAjaxCall(string postParam)

        {

            return postParam;       

        }

Sample snippet that explains jQuery Ajax POST using WebMethod in c#