版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/jbguo/article/details/82258375
(function (window) {
function getBrowserInfo () {
var agent = navigator.userAgent.toLowerCase()
var regStrff = /firefox\/[\d.]+/gi
if (agent.indexOf('firefox') > 0) {
return agent.match(regStrff)
}
}
var browser = getBrowserInfo()
var verinfo = (browser + '').replace(/[^0-9.]/ig, '')
var theUA = window.navigator.userAgent.toLowerCase()
if ((theUA.match(/msie\s\d+/) && theUA.match(/msie\s\d+/)[0]) || (theUA.match(/trident\s?\d+/) && theUA.match(/trident\s?\d+/)[0])) {
var ieVersion = theUA.match(/msie\s\d+/)[0].match(/\d+/)[0] || theUA.match(/trident\s?\d+/)[0]
if (ieVersion < 9 || verinfo < '56') {
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:blue;'>谷歌</a>" document.writeln("<pre style='text-align:center;color:#fff;background-color:#0cc; height:100%;border:0;position:fixed;top:0;left:0;width:100%;z-index:1234'>" + "<h2 style='padding-top:200px;margin:0'><strong>" + str + '<br/></strong></h2><h2>' + str2 + '</h2></pre>') document.execCommand('Stop') } } }(window))判断ie版本
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根据浏览器选择jquery版本
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<script src="http://www.to8to.com/gb_js/jquery-1.9.1.min.js" type="text/javascript"></script>
<![endif]-->
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<script src="http://www.to8to.com/gb_js/jquery-1.10.2.min.js" type="text/javascript"></script>
<![endif]-->
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<script src="http://www.to8to.com/gb_js/jquery-1.10.2.min.js" type="text/javascript"></script>
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