ajax方式
                var urlOne = "http://localhost:1951/otherOne.ashx";
                $.ajax({
                    type: "get",
                    url: urlOne,
                    dataType: "jsonp",
                    jsonp: "jsoncallback",
                    beforeSend: function (data, http) {
                        $("#divUrl").text(http.url);
                    },
                    success: function (data) {
                        alert(data.name);
                    }
                });
后台处理：
    public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "text/plain";
        string callbackname = context.Request["jsoncallback"];
        context.Response.Write(callbackname+"({name:'zhangsan'})");
        context.Response.End();
    }