JS判断用户用的哪个浏览器实例详解

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) alert('IE: ' + Sys.ie);if (Sys.firefox) alert('Firefox: ' + Sys.firefox);if (Sys.chrome) alert('Chrome: ' + Sys.chrome);if (Sys.opera) alert('Opera: ' + Sys.opera);if (Sys.safari) alert('Safari: ' + Sys.safari);if (Sys.ie == 9.0 || Sys.ie == 8.0 || Sys.ie == 7.0 || Sys.ie == 7.0){//这边是跳转的路径}