jquery+ajax实现跨域请求的方法_jquery

$.ajax({
type: "GET",
url: "http://www.xxx.com/Rest/ValidAccountsExists.aspx?accounts=admin",
dataType: "jsonp",
jsonp: "jsoncallback",
success: function (result) {
alert(result.Success);
alert(result.Content);
},

error: function (result, status) {
//处理错误
}
});

string accounts = GameRequest.GetQueryString("accounts");
string jsoncallback = GameRequest.GetQueryString("jsoncallback");
Response.ContentEncoding =System.Text.Encoding.UTF8;
Response.ContentType = "application/json";
Response.Write(jsoncallback + "({\"Success\":\"True\",\"Content\":\"" + accounts + "\"})");
Response.End();