完整的用户代理字符串检测

Posted 2022-02-24 xianxiaoan

var client = function()

    //呈现引擎
    var engine =             
        ie: 0,
        gecko: 0,
        webkit: 0,
        khtml: 0,
        opera: 0,

        //完整的版本号
        ver: null  
    ;
    
    //浏览器
    var browser = 
        
        //主要浏览器
        ie: 0,
        firefox: 0,
        safari: 0,
        konq: 0,
        opera: 0,
        chrome: 0,

        //具体版本号
        ver: null
    ;

    
    //平台，设备，和操作系统
    var system = 
        win: false,
        mac: false,
        x11: false,
        
        //移动设备
        iphone: false,
        ipod: false,
        ipad: false,
        ios: false,
        android: false,
        nokiaN: false,
        winMobile: false,
        
        //游戏系统
        wii: false,
        ps: false 
    ;    

    //检测呈现引擎和浏览器
    var ua = navigator.userAgent;    
    if (window.opera)
        engine.ver = browser.ver = window.opera.version();
        engine.opera = browser.opera = parseFloat(engine.ver);
     else if (/AppleWebKit\/(\S+)/.test(ua))
        engine.ver = RegExp["$1"];
        engine.webkit = parseFloat(engine.ver);
        
        //确定是 Chrome 还是 、Safari
        if (/Chrome\/(\S+)/.test(ua))
            browser.ver = RegExp["$1"];
            browser.chrome = parseFloat(browser.ver);
         else if (/Version\/(\S+)/.test(ua))
            browser.ver = RegExp["$1"];
            browser.safari = parseFloat(browser.ver);
         else 
            //近似确定版本号
            var safariVersion = 1;
            if (engine.webkit < 100)
                safariVersion = 1;
             else if (engine.webkit < 312)
                safariVersion = 1.2;
             else if (engine.webkit < 412)
                safariVersion = 1.3;
             else 
                safariVersion = 2;
               
            
            browser.safari = browser.ver = safariVersion;        
        
     else if (/KHTML\/(\S+)/.test(ua) || /Konqueror\/([^;]+)/.test(ua))
        engine.ver = browser.ver = RegExp["$1"];
        engine.khtml = browser.konq = parseFloat(engine.ver);
     else if (/rv:([^\)]+)\) Gecko\/\d8/.test(ua))    
        engine.ver = RegExp["$1"];
        engine.gecko = parseFloat(engine.ver);
        
        //确定不是 Firefox
        if (/Firefox\/(\S+)/.test(ua))
            browser.ver = RegExp["$1"];
            browser.firefox = parseFloat(browser.ver);
        
     else if (/MSIE ([^;]+)/.test(ua))    
        engine.ver = browser.ver = RegExp["$1"];
        engine.ie = browser.ie = parseFloat(engine.ver);
    
    
    //检测浏览器
    browser.ie = engine.ie;
    browser.opera = engine.opera;
    

    //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);

    //检测 Windows 操作系统
    if (system.win)
        if (/Win(?:dows )?([^do]2)\s?(\d+\.\d+)?/.test(ua))
            if (RegExp["$1"] == "NT")
                switch(RegExp["$2"])
                    case "5.0":
                        system.win = "2000";
                        break;
                    case "5.1":
                        system.win = "XP";
                        break;
                    case "6.0":
                        system.win = "Vista";
                        break;
                    case "6.1":
                        system.win = "7";
                        break;
                    default:
                        system.win = "NT";
                        break;                
                                            
             else if (RegExp["$1"] == "9x")
                system.win = "ME";
             else 
                system.win = RegExp["$1"];
            
        
    
    
    //移动设备
    system.iphone = ua.indexOf("iPhone") > -1;
    system.ipod = ua.indexOf("iPod") > -1;
    system.ipad = ua.indexOf("iPad") > -1;
    system.nokiaN = ua.indexOf("NokiaN") > -1;
    
    //windows mobile
    if (system.win == "CE")
        system.winMobile = system.win;
     else if (system.win == "Ph")
        if(/Windows Phone OS (\d+.\d+)/.test(ua));
            system.win = "Phone";
            system.winMobile = parseFloat(RegExp["$1"]);
        
    
    
    
    //检测 iOS 版本
    if (system.mac && ua.indexOf("Mobile") > -1)
        if (/CPU (?:iPhone )?OS (\d+_\d+)/.test(ua))
            system.ios = parseFloat(RegExp.$1.replace("_", "."));
         else 
            system.ios = 2;  //不能真正检测出来，所以只能猜测
        
    
    
    //检测 Android 版本
    if (/Android (\d+\.\d+)/.test(ua))
        system.android = parseFloat(RegExp.$1);
    
    
    //游戏系统
    system.wii = ua.indexOf("Wii") > -1;
    system.ps = /playstation/i.test(ua);
    
    //返回这些对象
    return 
        engine:     engine,
        browser:    browser,
        system:     system        
    ;

();