public ActionResult CheckUserInfo(string type, string value)
{
UserModel userModel = new UserModel();
int returnKey = 0;
string returnValue = "";
if (type == "name" && userModel.CheckUserName(value) != null)
returnValue = "用户名已存在";
else if (type == "email" && userModel.CheckUserEmail(value) != null)
returnValue = "邮箱已存在";
else
returnKey = 1;
return Json(new { key = returnKey, value = returnValue }, JsonRequestBehavior.AllowGet);
}