$.parseJSON()只支持标准的JSON，不标准的还是用eval("("+data+")")吧

什么 是标准的呢？

key和value都带引号的就是标准的； 而且必须是双引号，单引号也不行

understand?

举例:

string msg = "";
Model.Users currentUser;
string jsonStr = "";
//JavaScriptSerializer js = new JavaScriptSerializer();
bool result = bll.UserLogin(loginID,loginPwd,out msg,out currentUser);
if (!result)
{
jsonStr = "{\"result\":\"false\",\"msg\":\"" + msg + "\"}"; context.Response.Write(jsonStr); } else { //记录登陆成功的用户到Session中 context.Session.Add("currUser",currentUser); if (string.IsNullOrEmpty(redirectUrl)) { jsonStr = "{\"result\":\"true\",\"msg\":\"OK\",\"redirect\":\"\"}"; context.Response.Write(jsonStr); } else { jsonStr = "{\"result\":\"true\",\"redirect':\"" + context.Server.UrlDecode(redirectUrl) + "\"}"; context.Response.Write(jsonStr); } }