AJAX小练习，防止以后忘记

 <div id="content">

        <input id="btnShow" type="button" value="button" />

    </div>

        <script type="text/javascript">

            $("#btnShow").click(function () {

                $.ajax({

                    url: "handle.ashx",

                    asyn: true,

                    data: { LoginName: "lm", pwd: "mm" },

                    dataType: "json",

                    success: function (msg) {

                        //alert(msg.name);

                        $("#btnShow").after("<h1>" + msg.name + "</h1>");

                    },

                    error: function (data) {

                        alert(data);

                        alert(data.error);

                    }

                });

            });

        </script>

后台：

context.Response.ContentType = "application/json";

            //context.Response.ContentType = "text/plain";

            string name = context.Request["LoginName"].ToString();

            string age = context.Request["pwd"].ToString();

            string json = "{\"name\":\"张三\"}";

            context.Response.Write(json);

            //context.Response.Write("老王");