json数据处理
function xmfile(month, num, FBillID) {
$.ajax({
type: "get",
dataType: "json",
url: "/Services/File.ashx?month=" + month + "&num=" + num + "&FBillID=" + FBillID + "",
success: function (data) {
alert(data);
alert(data[0].Fid);
}
});
};

这是File.ashx页面获取的数据：{"shuju":[{"Fid":"1","FBillid":"4","FYear":"2013","FMonth":"1","FOrder":"","FAnnexName":"xerces.dll","FAnnexPath":"UploadFiles//测试1/2013/6/2013061810430387.dll","FDate":""},{"Fid":"3","FBillid":"4","FYear":"2013","FMonth":"1","FOrder":"1","FAnnexName":"jxConstMS.vssscc","FAnnexPath":"UploadFiles//测试1/2013/6/2013061811144968.vssscc","FDate":"2013-6-18 11:14:49"}]}

弹出[object Object]
data[0].Fid 不存在
数据还要如何处理，错误在哪里？

应该是 data.shuju[0].Fid吧
[解决办法]
你在File.ashx 里直接定义的：string data="{"shuju":[{"Fid":"1","FBillid":"4","FYear":"2013","FMonth":"1","FOrder":"","FAnnexName":"xerces.dll","FAnnexPath":"UploadFiles//测试1/2013/6/2013061810430387.dll","FDate":""},{"Fid":"3","FBillid":"4","FYear":"2013","FMonth":"1","FOrder":"1","FAnnexName":"jxConstMS.vssscc","FAnnexPath":"UploadFiles//测试1/2013/6/2013061811144968.vssscc","FDate":"2013-6-18 11:14:49"}]}"; 吗?
还是用JavaScriptSerializer serializer = new JavaScriptSerializer();
序列化后得到的数据呢？ 直接定义的好像也没取的时候还的反序列化！要是用JavaScriptSerializer 的话也没就不用反序列化了！