页面系统，浏览器检测- 网页基础模块（JavaScript）

// 浏览器检测，获取，弹出框提醒IE  返回浏览器详情
function GetbrowserSys()
{
  var BrowserMatch = {
    init: function() {
      this.browser = this.getBrowser().browser || "An Unknown Browser";
      this.version = this.getBrowser().version || "An Unknown Version";
      this.OS = this.getOS() || "An Unknown OS";
    },
    getOS: function() {
      if (navigator.platform.indexOf("Win") != -1) return "Windows";
      if (navigator.platform.indexOf("Mac") != -1) return "Mac";
      if (navigator.platform.indexOf("Linux") != -1) return "Linux";
      if (navigator.userAgent.indexOf("iPhone") != -1) return "iPhone/iPod";
    },
    getBrowser: function() {
			var browser="Unknown Browse";
			var version=0;
      var rMsie = /(msie\s|trident\/7)([\w\.]+)/;
      var rTrident = /(trident)\/([\w.]+)/;
      var rFirefox = /(firefox)\/([\w.]+)/;
      var rOpera = /(opera).+version\/([\w.]+)/;
      var rNewOpera = /(opr)\/(.+)/;
      var rChrome = /(chrome)\/([\w.]+)/;
      var rSafari = /version\/([\w.]+).*(safari)/;
      var ua = navigator.userAgent.toLowerCase();
      var matchBS, matchBS2;
      matchBS = rMsie.exec(ua);
      if (matchBS != null) {
        matchBS2 = rTrident.exec(ua);
        if (matchBS2 != null) {
          switch (matchBS2[2]) {
            case "4.0":
            return {
              browser:
              "IE",
              version: "8"
            };
            break;
            case "5.0":
            return {
              browser:
              "IE",
              version: "9"
            };
            break;
            case "6.0":
            return {
              browser:
              "IE",
              version: "10"
            };
            break;
            case "7.0":
            return {
              browser:
              "IE",
              version: "11"
            };
            break;
            default:
            return {
              browser:
              "IE",
              version: "Undefined"
            };
          }
        } else {
          return {
            browser: "IE",
            version: matchBS[2] || "0"
          };
        }
      }
      matchBS = rFirefox.exec(ua);
      if ((matchBS != null) && (!(window.attachEvent)) && (!(window.chrome)) && (!(window.opera))) {
        return {
          browser: matchBS[1] || "",
          version: matchBS[2] || "0"
        };
      }
      matchBS = rOpera.exec(ua);
      if ((matchBS != null) && (!(window.attachEvent))) {
        return {
          browser: matchBS[1] || "",
          version: matchBS[2] || "0"
        };
      }
      matchBS = rChrome.exec(ua);
      if ((matchBS != null) && ( !! (window.chrome)) && (!(window.attachEvent))) {
        matchBS2 = rNewOpera.exec(ua);
        if (matchBS2 == null) {
          return {
            browser: matchBS[1] || "",
            version: matchBS[2] || "0"
          };
        } else {
          return {
            browser: "Opera",
            version: matchBS2[2] || "0"
          };
        }
      }
      matchBS = rSafari.exec(ua);
      if ((matchBS != null) && (!(window.attachEvent)) && (!(window.chrome)) && (!(window.opera))) {
        return {
          browser: matchBS[2] || "",
          version: matchBS[1] || "0"
        };
      }
    }
  };
  BrowserMatch.init();
      // 获取浏览器名:BrowserMatch.browser;
      // 获取浏览器版本:BrowserMatch.version;
      // 获取所处操作系统:BrowserMatch.OS;  
      if (BrowserMatch.browser=="IE"&&BrowserMatch.version<9) {
        alert("您当前浏览器为："
				+ BrowserMatch.browser
				+"\nVersion："
				+ BrowserMatch.version+".0"
				+ "\n所处操作系统为："
				+BrowserMatch.OS
          +"\n你当前的浏览器不支持本网页大多功能， "
					+"\n为了更好体验宝宝提供的服务，\n请点点你的小手手升级或换个更厉害的浏览器吧！"
          );  
      }
      return "您当前浏览器为：" + BrowserMatch.browser +"\nVersion："+ BrowserMatch.version+".0" + "\n所处操作系统为："+BrowserMatch.OS;
    }