function getBrowser() {
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;
if (Sys.ie) return "IE";
else if (Sys.firefox) return "Firefox";
else if (Sys.chrome) return "Chrome";
else if (Sys.opera) return "Opera";
else if (Sys.safari) return "Safari";
}
原文地址:http://www.cnblogs.com/wknet/p/4109072.html