asp.net及javascript判断是否手机访问的方法

/// <summary>/// 判断手机用户UserAgent/// </summary>/// <returns></returns>private bool IsMobile(){  HttpContext context = HttpContext.Current;  if (context != null)  {    HttpRequest request = context.Request;    if (request.Browser.IsMobileDevice)      return true;    string MobileUserAgent=System.Configuration.ConfigurationManager.AppSettings["MobileUserAgent"];    Regex MOBILE_REGEX = new Regex(MobileUserAgent);    if (string.IsNullOrEmpty(request.UserAgent) || MOBILE_REGEX.IsMatch(request.UserAgent.ToLower()))      return true;  }  return false;}

<script>var system ={  win : false,  mac : false,  xll : false  };//检测平台var p = navigator.platform;system.win = p.indexOf("Win") == 0;system.mac = p.indexOf("Mac") == 0;system.x11 = (p == "X11") || (p.indexOf("Linux") == 0);//跳转语句if(system.win||system.mac||system.xll){  alert(system.mac)}else{  window.location.href="手机访问地址";}</script>