javascript实现获取浏览器版本、操作系统类型

/** * Created by Administrator on 15-1-12. */function BroswerUtil() {}BroswerUtil = {  //检测浏览器版本  getBrowserVersion: function () {    var agent = navigator.userAgent.toLowerCase();    var arr = [];    var Browser = "";    var Bversion = "";    var verinNum = "";    //IE    if (agent.indexOf("msie") > 0) {      var regStr_ie = /msie [/d.]+;/gi;      Browser = "IE";      Bversion = "" + agent.match(regStr_ie)    }    //firefox    else if (agent.indexOf("firefox") > 0) {      var regStr_ff = /firefox//[/d.]+/gi;      Browser = "firefox";      Bversion = "" + agent.match(regStr_ff);    }    //Chrome    else if (agent.indexOf("chrome") > 0) {      var regStr_chrome = /chrome//[/d.]+/gi;      Browser = "chrome";      Bversion = "" + agent.match(regStr_chrome);    }    //Safari    else if (agent.indexOf("safari") > 0 && agent.indexOf("chrome") < 0) {      var regStr_saf = /version//[/d.]+/gi;      Browser = "safari";      Bversion = "" + agent.match(regStr_saf);    }    //Opera    else if (agent.indexOf("opera") >= 0) {      var regStr_opera = /version//[/d.]+/gi;      Browser = "opera";      Bversion = "" + agent.match(regStr_opera);    } else {      var browser = navigator.appName;      if (browser == "Netscape") {        var version = agent.split(";");        var trim_Version = version[7].replace(/[ ]/g, "");        var rvStr = trim_Version.match(/[/d/.]/g).toString();        var rv = rvStr.replace(/[,]/g, "");        Bversion = rv;        Browser = "IE"      }    }    verinNum = (Bversion + "").replace(/[^0-9.]/ig, "");    arr.push(Browser);    arr.push(verinNum);    return arr;  },  //检测是否是XX浏览器  WB: (function () {    var UserAgent = navigator.userAgent.toLowerCase();    return {      isIE6: /msie 6.0/.test(UserAgent), // IE6      isIE7: /msie 7.0/.test(UserAgent), // IE7      isIE8: /msie 8.0/.test(UserAgent), // IE8      isIE9: /msie 9.0/.test(UserAgent), // IE9      isIE10: /msie 10.0/.test(UserAgent), // IE10      isIE11: /msie 11.0/.test(UserAgent), // IE11      isLB: /lbbrowser/.test(UserAgent), // 猎豹浏览器      isUc: /ucweb/.test(UserAgent), // UC浏览器      is360: /360se/.test(UserAgent), // 360浏览器      isBaidu: /bidubrowser/.test(UserAgent), // 百度浏览器      isSougou: /metasr/.test(UserAgent), // 搜狗浏览器      isChrome: /chrome/.test(UserAgent.substr(-33, 6)), // Chrome浏览器      isFirefox: /firefox/.test(UserAgent), // 火狐浏览器      isOpera: /opera/.test(UserAgent), // Opera浏览器      isSafire: /safari/.test(UserAgent) && !/chrome/.test(UserAgent), // safire浏览器      isQQ: /qqbrowser/.test(UserAgent)//qq浏览器    };  })(),  //检测当前操作系统  CurrentSystem: (function () {    var system = {      win: false,      mac: false,      xll: false,      iphone: false,      ipoad: false,      ipad: false,      ios: false,      android: false,      nokiaN: false,      winMobile: false,      wii: false,      ps: false    };    var ua = navigator.userAgent;    // 检测平台    var p = navigator.platform;    system.win = p.indexOf('Win') == 0;    system.mac = p.indexOf('Mac') == 0;    system.xll = (p.indexOf('Xll') == 0 || 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;            case '6.2':              system.win = '8';              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)/i.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+)/i.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+)/i.test(ua)) {      system.android = parseFloat(RegExp['$1']);    }    // 游戏系统    system.wii = ua.indexOf('Wii') > -1;    system.ps = /PlayStation/i.test(ua);    return {      system: system    }  })()}