//检查浏览器种类及其版本号

function checkBrowserVersion(){

	            var Sys = {};

                var ua = navigator.userAgent.toLowerCase();

                var s;

                (s = ua.match(/msie ([\d.]+)/)) ? Sys.ie = s[1] :

                (s = ua.match(/firefox\/([\d.]+)/)) ? Sys.firefox = s[1] :

                (s = ua.match(/chrome\/([\d.]+)/)) ? Sys.chrome = s[1] :

                (s = ua.match(/opera.([\d.]+)/)) ? Sys.opera = s[1] :

                (s = ua.match(/version\/([\d.]+).*safari/)) ? Sys.safari = s[1] : 0;

                //以下进行测试

                if (Sys.ie)      return {"browser":"IE","version":Sys.ie};

                if (Sys.firefox) return {"browser":"Firefox","version":Sys.firefox};

                if (Sys.chrome)  return {"browser":"Chrome","version":Sys.chrome};

                if (Sys.opera)   return {"browser":"Opera","version":Sys.opera};

                if (Sys.safari)  return {"browser":"Safari","version":Sys.safari};

}

checkBrowserVersion();

/*

     {browser: "Chrome", version: "61.0.3163.100"}

*/