调试易

json规范写法是应该带引号的，
如果是对象可以直接用了；
如果是字符串要eval('('+jsonStr+')')之后用

eval();
直接以对象用就可以了。

{
    "class": "pojo.MessageInfo",
    "date": "09/17",
    "tel": "13311394280",
    "userinfoList": [
        {
            "cardNo": "150203198010210634",
            "class": "pojo.Userinfo",
            "flightinfoList": [
                {
                    "class": "pojo.FlightInfo",
                    "downDate": "21:40",
                    "flightNo": "CA1121",
                    "flyDate": "20:15"
                }
            ],
            "userName": "曹锐"
        },
        {
            "cardNo": "E4057604",
            "class": "pojo.Userinfo",
            "flightinfoList": [
                {
                    "class": "pojo.FlightInfo",
                    "downDate": "21:40",
                    "flightNo": "CA1121",
                    "flyDate": "20:15"
                }
            ],
            "userName": "CHUN/MATTHEWROBERT"
        },
        {
            "cardNo": "110104198109140414",
            "class": "pojo.Userinfo",
            "flightinfoList": [
                {
                    "class": "pojo.FlightInfo",
                    "downDate": "21:40",
                    "flightNo": "CA1121",
                    "flyDate": "20:15"
                }
            ],
            "userName": "于洋 JM9N45"
        }
    ]
}

引入一个json.js文件 里面有一个方法，stringToJson可以把字符串转换成json
或者用jQuery里面的parseJson方法，把字符串转换成 Json

var userList=eval('(' + xmlHttp.responseText + ')');
var user = eval(userList.JSONRESULT);这两句中userList.JSONRESULT是什么意思？？？在线等待