var client = function(){ //呈现引擎 var engine ={ ie : 0, gecko : 0, webkit : 0, khtml : 0, opera : 0, ver : null }; //浏览器 var browser = { ie : 0, firefox :0, safari : 0, konq :0, opera : 0, chrome : 0, ver : null }; var system ={ win :false, max : false, x11 : false, //移动设备 iphone : false , ipod : false, ipad : false, ios : false, android : false, nokiaN : false, winMoble : false, //游戏系统 wii :false, ps : false }; var ua =navigator.userAgent; //Opera 9以后出现了两种字符串代理的方式 一种方式就是将自身标识另外一个浏览器 另外一种方式就是标志自己为firefox或者IE //在后面这种情况下 用户代理字符串实际上与其他浏览器返回的相同--既没有opera的字样,也不包含opera的版本信息 //因此判断浏览器先从opera开始 if(winddow.opera){ engine.ver = browser.ver = window.opera.version(); egine.opera = browser.opera = parseFloat(engine.ver); //第二个检测WebKit 是因为WebKit的用户代理字Gecko"和"HTMKL"的字符串 所以如果首先检测他们都有错误的结论 }else if (/AppleWebKit\/(\S+)/.test(ua)){ engin.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(brower.ver); }else if(/Version\/(+\S)/.test(ua)){//safari 3.0后增加了Version属性 browser.ver = RegExp["$1"]; browser.safari = parseFloat(brower.ver); }else{ var safariVersion = 1; if(engine.webkit<100){ safariVersion = 1; }else if(engine.ver<312){ safariVersion = 1.2; }else if(engine.ver<412){ safariVersion = 1.3; }else{ safariVersion = 2; } browser.safari = browser.ver = safariVersion; } }else if(/KHTML\/(\S+)/.test(ua)||/Konqueror\/([^;]+)/.test(ua)){//Linux下浏览器 engine.ver = browser.ver = RegExp["$1"]; engine.khtml = parseFloat(engine.ver); }else if(/rv:([^\)]+\) Gocko\/\d{8}/.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; var p = navigator.platform; system.win = p.indexOf("Win")==0; system.mac = p.indexOf("Mac")==0; system.x11 = (p=="x11")||p.indexOf("Linux")==0; if(system.win){ if(/Win(?:dow)?([^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"; 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; //win 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\s*(?:iPhone)?OS\s*(\d+_\d+)/.test(ua )){ system.ios = parseFloat(RexExp.$1.replace("_",".")); }else { system.ios = 2 ;//不能真正检查出来,所以猜测出来一个结果 } } //检查安卓版本 // if(/Android\s(\d+\_\d+)/.test(ua)){ system.andriod = parseFloat(RegExp.$1); } //游戏系统 system.wii = us.indexOf("Wii")>-1; system.ps = /playstation/i.test(ua); //返回对象 return { engine : engine, browser : browser, system : system } }