js 判断设备

varnish判断

 if (req.http.User-Agent ~ "Mobile"
        || req.http.User-Agent ~ "Nokia"
        || req.http.User-Agent ~ "SAMSUNG"
        || req.http.User-Agent ~ "SonyEricsson"
        || req.http.User-Agent ~ "MOT"
        || req.http.User-Agent ~ "BlackBerry"
        || req.http.User-Agent ~ "LG"
        || req.http.User-Agent ~ "HTC"
        || req.http.User-Agent ~ "J2ME"
        || req.http.User-Agent ~ "Opera Mini"
        || req.http.User-Agent ~ "UCWEB"
    ) {
        set req.http.internal.isMobile = "true";
    }

 js判断

var os = {},userAgent = window.navigator.userAgent;
            os.Mobile = userAgent.match(/Mobile/) ? true : false;    
            os.Nokia = userAgent.match(/Nokia/) ? true : false;    
            os.SAMSUNG = userAgent.match(/SAMSUNG/) ? true : false;    
            os.SonyEricsson = userAgent.match(/SonyEricsson/) ? true : false;    
            os.MOT = userAgent.match(/MOT/) ? true : false;    
            os.BlackBerry = userAgent.match(/BlackBerry/) ? true : false;    
            os.LG = userAgent.match(/LG/) ? true : false;        
            os.HTC = userAgent.match(/HTC/) ? true : false;        
            os.OperaMini = userAgent.match(/Opera Mini/) ? true : false;        
            os.UCWEB = userAgent.match(/UCWEB/) ? true : false;        

            os.isMobile = os.Mobile || os.Nokia || os.SAMSUNG || os.SonyEricsson || os.MOT ||
                    os.BlackBerry || os.LG || os.HTC || os.OperaMini || os.UCWEB;
            os.desktop = !os.isMobile;
            if(mobileUrl && os.isMobile){
                  window.location.href = mobileUrl;
            }

参考js判断

var os = {},userAgent = window.navigator.userAgent,isToM;
            os.webkit = userAgent.match(/WebKit/([d.]+)/) ? true : false;
            os.webkit = userAgent.match(/WebKit/([d.]+)/) ? true : false;
            os.android = userAgent.match(/(Android)s+([d.]+)/) || userAgent.match(/Silk-Accelerated/) ? true : false;
            os.androidICS = os.android && userAgent.match(/(Android)s4/) ? true : false;
            os.ipad = userAgent.match(/(iPad).*OSs([d_]+)/) ? true : false;
            os.ipod = userAgent.match(/(iPod).*OSs([d_]+)/) ? true : false;
            os.iphone = !os.ipad && userAgent.match(/(iPhonesOS)s([d_]+)/) ? true : false;
            os.webos = userAgent.match(/(webOS|hpwOS)[s/]([d.]+)/) ? true : false;
            os.touchpad = os.webos && userAgent.match(/TouchPad/) ? true : false;
            os.ios = os.ipad || os.iphone;
            os.ios6 = os.ios &&  userAgent.match(/(OS)s([6])/) ? true : false;
            os.playbook = userAgent.match(/PlayBook/) ? true : false;
            os.blackberry = os.playbook || userAgent.match(/BlackBerry/) ? true : false;
            os.blackberry10 = os.blackberry && userAgent.match(/Safari/536/) ? true : false;
            os.chrome = userAgent.match(/Chrome/) ? true : false;
            os.opera = userAgent.match(/Opera Mobi/) ? true : false;
            os.fennec = userAgent.match(/fennec/i) ? true : false;
            os.supportsTouch = ((window.DocumentTouch && document instanceof window.DocumentTouch) || 'ontouchstart' in window);
            os.desktop = !(os.ios || os.android || os.blackberry || os.opera || os.fennec || os.supportsTouch);

            if(mobileUrl && (os.ipod || os.iphone || os.android)){
                  window.location.href = mobileUrl;
            }