转自:判断浏览器版本是否是ie8以下浏览器,如果是调到提示换更高级版本浏览器页面
(function(window) {
var theUA = window.navigator.userAgent.toLowerCase();
if ((theUA.match(/msiesd+/) && theUA.match(/msiesd+/)[0]) || (theUA.match(/tridents?d+/) && theUA.match(/tridents?d+/)[0])) {
var ieVersion = theUA.match(/msiesd+/)[0].match(/d+/)[0] || theUA.match(/tridents?d+/)[0];
if (ieVersion < 9) {
var str = "你的浏览器版本太low了
已经和时代脱轨了 :(";
var str2 = "推荐使用:<a href='https://www.baidu.com/s?ie=UTF-8&wd=%E8%B0%B7%E6%AD%8C%E6%B5%8F%E8%A7%88%E5%99%A8' target='_blank' style='color:#cc0'>谷歌</a>,"
+ "<a href='https://www.baidu.com/s?ie=UTF-8&wd=%E7%81%AB%E7%8B%90%E6%B5%8F%E8%A7%88%E5%99%A8' target='_blank' style='color:#cc0'>火狐</a>,"
+ "<a href='https://www.baidu.com/s?ie=UTF-8&wd=%E7%8C%8E%E8%B1%B9%E6%B5%8F%E8%A7%88%E5%99%A8' target='_blank' style='color:#cc0'>猎豹</a>,其他双核急速模式";
document.writeln("<pre style='text-align:center;color:#fff; height:100%;border:0;position:fixed;top:0;left:0;100%;z-index:1234'>" +
"<h2 style='padding-top:200px;margin:0'><strong>" + str + "<br/></strong></h2><p>" +
str2 + "</p><h2 style='margin:0'><strong>如果你的使用的是双核浏览器,请切换到极速模式访问<br/></strong></h2></pre>");
document.execCommand("Stop");
};
}
})(window);
Java中判断
String theUA = request.getHeader("user-agent").toLowerCase(); Pattern pattern1 = Pattern.compile("(msie)\s\d+"); Matcher matcher1 = pattern1.matcher(theUA); if (matcher1.find()){ String strVersion = matcher1.group(); Pattern pattern2 = Pattern.compile("\d+"); Matcher matcher2 = pattern2.matcher(strVersion); if(matcher2.find()){ String intVersion = matcher2.group(); int ieVersion = Integer.parseInt(intVersion); if(ieVersion < 9){ return "IE版本小于9.0"; } } }