JS实现网站检测浏览器，跳转pc端，手机端

function wapredirect(f) {
    var url   = document.referrer;
    if(url!="")
    {
        if(url.indexOf(location.host) > 0)
        {
            return false;    
        }
    }
    if ((navigator.userAgent.match(/(iPhone|iPod|Android|ios|SymbianOS|Windows Phone|Nokia)/i))) {
        location.replace(f)
    }
}

function pcredirect(f) {
      if (!(navigator.userAgent.match(/(iPhone|iPod|Android|ios|SymbianOS|Windows Phone|Nokia)/i))) {
          location.replace(f)
      }
}