使用JS 获取当前用户使用的浏览器信息以及操作系统版本信息

说明：

浏览器更新快，有些代码可能会失效，需要你再次测试验证。

以下代码是我参照网友的代码进行改良整合而成。（由于项目时间急，没有记录所抄写代码的原作者，请原谅。。。）

系统版本只测试了 Windows系统，IE浏览器只测试了 IE9-IE最新版。Safari（苹果）浏览器仅测试了win版。

可以获取用户当前浏览器的名称、(基于)内核版本号、（自身浏览器厂商的）内核版本号以及浏览器所处的操作系统版本信息。

获取浏览器 (基于)内核版本号

最后运行的结果：

如果你是想获取浏览器厂商自身的内核版本，那么只需要修改 getBrowser: function() 方法代码如下：

                              getBrowser: function() { // 获取浏览器名
                   var rMsie = /(msie\s|trident\/7)([\w\.]+)/;
                   var rTrident = /(trident)\/([\w.]+)/;
                   var rEdge = /(edge)\/([\w.]+)/;//IE

                   var rFirefox = /(firefox)\/([\w.]+)/; //火狐
                   var rOpera = /(opera).+version\/([\w.]+)/; //旧Opera
                   var rNewOpera = /(opr)\/(.+)/; //新Opera 基于谷歌
                   var rChrome = /(chrome)\/([\w.]+)/; //谷歌
                   var rUC = /(ubrowser)\/([\w.]+)/;//UC
                   var rMaxthon = /(maxthon)\/([\w.]+)/;//遨游
                   var r2345 = /(2345explorer)\/([\w.]+)/;//2345
                   var rQQ = /(qqbrowser)\/([\w.]+)/;//QQ
                   //var rMetasr = /(metasr)\/([\w.]+)/;//搜狗
                   var rSafari = /version\/([\w.]+).*(safari)/;

                   var ua = navigator.userAgent.toLowerCase();

                   var matchBS, matchBS2;

                   //IE 低版
                   matchBS = rMsie.exec(ua);
                   if (matchBS != null) {
                       matchBS2 = rTrident.exec(ua);
                       if (matchBS2 != null) {
                           switch (matchBS2[2]) {
                           case "4.0":
                               return {
                                   browser:
                                   "Microsoft IE",
                                   version: "IE: 8" //内核版本号
                               };
                               break;
                           case "5.0":
                               return {
                                   browser:
                                   "Microsoft IE",
                                   version: "IE: 9"
                               };
                               break;
                           case "6.0":
                               return {
                                   browser:
                                   "Microsoft IE",
                                   version: "IE: 10"
                               };
                               break;
                           case "7.0":
                               return {
                                   browser:
                                   "Microsoft IE",
                                   version: "IE: 11"
                               };
                               break;
                           default:
                               return {
                                   browser:
                                   "Microsoft IE",
                                   version: "Undefined"
                               };
                           }
                       } else {
                           return {
                               browser: "Microsoft IE",
                               version: "IE:"+matchBS[2] || "0"
                           };
                       }
                   }
                   //IE最新版
                   matchBS = rEdge.exec(ua);
                   if ((matchBS != null) && (!(window.attachEvent))) {
                       return {
                           browser: "Microsoft Edge",
                           version: "Edge/"+matchBS[2] || "0"
                       };
                   }
                    //UC浏览器
                   matchBS = rUC.exec(ua);
                   if ((matchBS != null) && (!(window.attachEvent))) {
                       return {
                           browser: "UC",
                           version: "ubrowser/"+matchBS[2] || "0"
                       };
                   }
                   //火狐浏览器
                   matchBS = rFirefox.exec(ua);
                   if ((matchBS != null) && (!(window.attachEvent))) {
                       return {
                           browser: "火狐",
                           version: "Firefox/"+matchBS[2] || "0"
                       };
                   }
                    //Oper浏览器
                   matchBS = rOpera.exec(ua);
                   if ((matchBS != null) && (!(window.attachEvent))) {
                       return {
                           browser: "Opera",
                           version: "Opera/"+matchBS[2] || "0"
                       };
                   }
                   //遨游
                   matchBS = rMaxthon.exec(ua);
                   if ((matchBS != null) && (!(window.attachEvent))) {
                       return {
                           browser: "遨游",
                           version: "Maxthon/"+matchBS[2] || "0"
                       };
                   }
                    //2345浏览器
                    matchBS = r2345.exec(ua);
                   if ((matchBS != null) && (!(window.attachEvent))) {
                       return {
                           browser: "2345",
                           version: "2345explorer/ "+matchBS[2] || "0"
                       };
                   }
                    //QQ浏览器
                   matchBS = rQQ.exec(ua);
                   if ((matchBS != null) && (!(window.attachEvent))) {
                       return {
                           browser: "QQ",
                           version: "qqbrowser/"+matchBS[2] || "0"
                       };
                   }
                   //Safari（苹果）浏览器
                   matchBS = rSafari.exec(ua);
                   if ((matchBS != null) && (!(window.attachEvent)) && (!(window.chrome)) && (!(window.opera))) {
                       return {
                           browser: "Safari",
                           version: "Safari(win版)/"+matchBS[1] || "0"
                       };
                   }
                   //谷歌浏览器
                   matchBS = rChrome.exec(ua);
                   if ((matchBS != null) && (!(window.attachEvent))) {
                       matchBS2 = rNewOpera.exec(ua);
                       if (matchBS2 == null) {
                           return {
                               browser: "谷歌",
                               version: "Chrome/"+matchBS[2] || "0"
                           };
                       } else {
                           return {
                               browser: "Opera",
                               version: "opr/"+matchBS2[2] || "0"
                           };
                       }
                   }
               }
运行结果：