实例一、比较简单粗暴缺少点类型判断
var sUserAgent = navigator.userAgent.toLowerCase();
var bIsIpad = sUserAgent.match(/ipad/i) == "ipad";
var bIsIphoneOs = sUserAgent.match(/iphone os/i) == "iphone os";
var bIsMidp = sUserAgent.match(/midp/i) == "midp";
var bIsUc7 = sUserAgent.match(/rv:1.2.3.4/i) == "rv:1.2.3.4";
var bIsUc = sUserAgent.match(/ucweb/i) == "ucweb";
var bIsAndroid = sUserAgent.match(/android/i) == "android";
var bIsCE = sUserAgent.match(/windows ce/i) == "windows ce";
var bIsWM = sUserAgent.match(/windows mobile/i) == "windows mobile";
if (bIsIpad || bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM ){
window.location.href="3g.<a href="https://www.jb51.cc/tag/PHP/" target="_blank" class="keywords">PHP</a>";
}
实例二、代码工整，很多的函数都基于这个增加的功能
var pc_style = ""
var browser = {
versions: function () {
var u = navigator.userAgent,app = navigator.appVersion;
return {
trident: u.indexOf('Trident') > -1,presto: u.indexOf('Presto') > -1,webKit: u.indexOf('AppleWebKit') > -1,gecko: u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1,mobile: !!u.match(/AppleWebKit.*Mobile.*/) || !!u.match(/AppleWebKit/) && u.indexOf('QIHU') && u.indexOf('QIHU') > -1 && u.indexOf('Chrome') < 0,ios: !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/),android: u.indexOf('Android') > -1 || u.indexOf('Linux') > -1,iPhone: u.indexOf('iPhone') > -1 || u.indexOf('Mac') > -1,iPad: u.indexOf('iPad') > -1,webApp: u.indexOf('Safari') == -1,ua: u
};
}(),language: (navigator.browserLanguage || navigator.language).toLowerCase()
}
if (browser.versions.mobile && !browser.versions.iPad) {
this.location = "此处输入<a href="https://www.jb51.cc/tag/tiaozhuan/" target="_blank" class="keywords">跳转</a>微站<a href="https://www.jb51.cc/tag/shouye/" target="_blank" class="keywords">首页</a>地址";
}实例三、增加了一些功能
实例四、简洁编程之家推荐使用，如果您有更好的代码可以分享
-1,ucSB : u.indexOf('Firefox/1.') > -1
};
}
(),liulanqi : navigator.userAgent
}
if (browser.versions.QQbrw){
document.write("qq浏览器");
}else
{
document.write("其它浏览器"+browser.liulanqi);
}
原文链接：https://www.f2er.com/js/49059.html