完整的用户代理字符串检测脚本

  1 var client = function(){
  2     
  3     //呈现引擎
  4     var engine ={
  5         ie: 0,
  6         gecko: 0;
  7         webkit: 0;
  8         khtml: 0;
  9         opera: 0;
 10 
 11         //完整的版本号
 12         ver: null
 13     };
 14 
 15     //浏览器
 16     var browser = {
 17         //主要浏览器
 18         ie: 0,
 19         firefox: 0;
 20         safari: 0;
 21         konq: 0;
 22         opera: 0;
 23         chrome: 0;
 24 
 25         //具体版本号
 26         ver: null
 27     };
 28 
 29     //平台、设备和操作系统
 30     var system = {
 31         win: false,
 32         mac: false,
 33         xll:false,
 34 
 35         //移动设备
 36         iphone: false,
 37         ipod: false,
 38         ipad: false,
 39         ios: false,
 40         android: false,
 41         nokiaN: false,
 42         winMobile:false,
 43 
 44         //游戏系统
 45         wii: false,
 46         ps: false
 47     };
 48 
 49     //检测呈现引擎和浏览器
 50     var ua = navigator.userAgent;
 51     if (window.opera) {
 52         engine.ver = browser.ver = window.opera.version();
 53         engine.opera = browser.opera = parseFloat(engine.ver);
 54     }else if (/AppleWebkit\/(\S+)/.test(ua)) {
 55         engine.ver = RegExp["$1"];
 56         browser.webkit = parseFloat(engine.ver);
 57 
 58         //确定是Chrome还是Safari
 59         if(/Chrome\/(\S+)/.test(ua)){
 60             browser.ver = RegExp["$1"];
 61             browser.chrome = parseFloat(browser.ver);
 62         }else if (/Version\/(\S+)/.test(ua)) {
 63             browser.ver = RegExp["$1"];
 64             browser.safari =1 parseFloat(browser.ver); 
 65         }else {
 66             //近似地确定版本号
 67             var safariVersion = 1;
 68             if(engine.webkit < 100){
 69                 safariVersion = 1;
 70             }else if(engine.webkit < 312){
 71                 safariVersion = 1.2;
 72             }else if(engine.webkit < 412){
 73                 safariVersion = 1.3;
 74             }else {
 75                 safariVersion = 2;
 76             }
 77 
 78             browser.safari = browser.ver = safariVersion;
 79         }
 80     }else if(/KHTML\/(\S+)/.test(ua) || /Konqueror\/([^;]+)/.test(ua)){
 81         engine.ver = browser.ver = RegExp["$1"];
 82         engine.khtml = browser.konq = parseFloat(engine,ver);
 83     }else if(/rv:([^\)]+)\) Gecko\/\d{8}/.test(ua)){
 84         engine.ver = RegExp["$1"];
 85         browser.gecko = parseFloat(engine.ver);
 86 
 87         //确定是不是Firefox
 88         if(/Firefox\/(\S+)/.test(ua)){
 89             browser.ver = RegExp["$1"];
 90             browser.firefox = parseFloat(browser,ver);
 91         }
 92     }else if(/MISE([^;]+)/.test(ua)){
 93         engine.ver = browser.ver = RegExp["$1"];
 94         engine.ie = browser.ie = parseFloat(engine,ver);
 95     }
 96 
 97         //检查浏览器
 98         browser.ie = engine.ie;
 99         browser.opera = engine.opera;
100 
101         //检测平台
102         var p = navigator.platfrom;
103         system.win = p.indexOf("win") == 0;
104         system.mac = p.indexOf("Mac") == 0;
105         system.xll = p.indexOf("wll") || (p.indexOf("Linux") == 0);
106 
107         //检测windows操作系统
108         if (system.win){
109             if(/Win(?:dows )?([^do]{2}\s?(\d+\.\d+)?/.test(ua)){
110                 if (RegExp["$1"] == "NT") {
111                     switch(RegExp["$2"]){
112                         case "5.0":
113                             system.win = "2000";
114                             break;
115                         case "5.1":
116                             system.win = "XP";
117                             break;
118                         case "6.0":
119                             system.win = "Vista";
120                             break;
121                         case "6.1":
122                             system.win = "7";
123                             break;
124                         default:
125                             system.win = "NT";
126                             break;
127                     }
128                 }else if (RegExp["$1"] == "9x"){
129                     system.win = "ME";
130                 }else {
131                     system.win = RegExp["$1"];
132                 }
133             }
134         }
135 
136         //移动设备
137         system.iphone = ua.indexOf("iPhone") > -1;
138         system.ipod = ua.indexOf("iPod") > -1;
139         system.ipad = ua.indexOf("iPad") > -1;
140         system.nokiaN = ua.indexOf("NokiaN") > -1;
141 
142         //windows mobile
143         if (system.win == "CE"){
144             system.winMobile = system.win;
145         }else if(system.win == "Ph"){
146             if(/Windows Phone OS (\d+.\d+)/.test(ua)){
147                 system.win = "Phone";
148                 system.winMobile = parseFloat(RegExp["$1"]);
149             }
150         }
151 
152         //检测iOS版本
153         if(system.mac && ua.indexOf("Mobile") > -1){
154             if(/CPU(?:iPhone )?OS (\d+_\d+)/.test(ua)){
155                 system.ios = parseFloat(RegExp.$1.replace("_","."));
156             }else {
157                 system.ios = 2; //不能真正检测出来，所以只能猜测
158             }
159         }
160 
161         //检测Android版本
162         if(/Android(\d+\.\d+)/.test(ua)){
163             system.android = parseFloat(RegExp.$1);   
164         }
165 
166         //游戏系统
167         system.wii = ua.indexOf("Wii") > -1;
168         system.ps = /playstation/i.test(ua);
169 
170         //返回这些对象
171         return {
172             engine: engine,
173             browser: browser,
174             system: system
175         };
176 }();