js post get ajax 调用接口传值 json方式

<script type="text/javascript">
function sendpost2() {
var shoujihaoma = document.getElementById("Mobphone").value;
var phone = md5();//MD5加密
var app_idi = "2B3D396DBD874913BA0EBCF4E04E394A";
var qian = jine();//获取金额
$.ajax({
type: "post",
async: false,
url: "http://192.168.10.191:8078/recharge/getpostorder.ashx",
dataType: "jsonp",
data: { "app_id": app_idi, "phone": shoujihaoma,"amount":qian,"secret_code":phone },
jsonp: "callback", //传递给请求处理程序或页面的，用以获得jsonp回调函数名的参数名(一般默认为:callback)
jsonpCallback: "flightHandler", //自定义的jsonp回调函数名称，默认为jQuery自动生成的随机函数名，也可以写"?"，jQuery会自动为你处理数据
success: function(json) {
alert(json.appid);
var dingdanNum = json.appid;//获取接口的返回值，返回值的格式是变量为appid才可以
location.href = "confirmed.html?liushui=" + dingdanNum + "&shoujiNum=" + shoujihaoma + "&monery=" + qian;
},
error: function() {
alert('fail');
}
});
}
</script>

<script type="text/javascript">
function sendget2() {
var shoujihaoma = document.getElementById("Mobphone").value;
var phone = md5();
var app_idi = "2B3D396DBD874913BA0EBCF4E04E394A";
var qian = jine();
$.ajax({
type: "get",
async: false,
url: "http://192.168.10.191:8078/recharge/getpostorder.ashx",
dataType: "jsonp",
data: { "app_id": app_idi, "phone": shoujihaoma, "amount": qian, "secret_code": phone },
jsonp: "callback", //传递给请求处理程序或页面的，用以获得jsonp回调函数名的参数名(一般默认为:callback)
jsonpCallback: "flightHandler", //自定义的jsonp回调函数名称，默认为jQuery自动生成的随机函数名，也可以写"?"，jQuery会自动为你处理数据
success: function(json) {
var dingdanNum = json.appid;
//alert(dingdanNum);
location.href = "confirmed.html?liushui="+dingdanNum+"&shoujiNum="+shoujihaoma+"&monery="+qian;
},
error: function() {
alert('fail');
}
});
}
</script>

接口返回值的方式

string appid = context.Request.Params["app_id"];//获取js发送过来的数据
string appkey = context.Request.Params["app_key"];
if (appid == "1" && appkey == "1")
{

string item = null;
item = "flightHandler({";
item += "\"appid\"";//返回数据的变量
item += ":";
item += "\"hello\"";//将要返回的数据
item += "});";
context.Response.Write(item);
}