获取浏览器类型、版本、操作系统

//浏览器信息
var Browser = function(userAgent){
var u = userAgent||navigator.userAgent;
var _this = this;
var match = {
//内核
Trident: u.indexOf('Trident')>0||u.indexOf('NET CLR')>0,
Presto: u.indexOf('Presto')>0,
WebKit: u.indexOf('AppleWebKit')>0,
Gecko: u.indexOf('Gecko/')>0,
//浏览器
UC: u.indexOf('UC')>0||u.indexOf(' UBrowser')>0,
QQBrowser: u.indexOf('QQBrowser')>0,
QQ: u.indexOf('QQ/')>0,
Baidu: u.indexOf('Baidu')>0||u.indexOf('BIDUBrowser')>0,
Maxthon: u.indexOf('Maxthon')>0,
LBBROWSER: u.indexOf('LBBROWSER')>0,
Sogou: u.indexOf('MetaSr')>0||u.indexOf('Sogou')>0,
IE: u.indexOf('MSIE')>0||u.indexOf('Trident')>0,
Firefox: u.indexOf('Firefox')>0,
Opera: u.indexOf('Opera')>0||u.indexOf('OPR')>0,
Safari: u.indexOf('Safari')>0,
Chrome:u.indexOf('Chrome')>0||u.indexOf('CriOS')>0,
Wechat:u.indexOf('MicroMessenger')>0,
Taobao:u.indexOf('AliApp(TB')>0,
Alipay:u.indexOf('AliApp(AP')>0,
Weibo:u.indexOf('Weibo')>0,
Suning:u.indexOf('SNEBUY-APP')>0,
iQiYi:u.indexOf('IqiyiApp')>0,
//系统或平台
Windows:u.indexOf('Windows')>0,
Linux:u.indexOf('Linux')>0,
Mac:u.indexOf('Macintosh')>0,
Android:u.indexOf('Android')>0||u.indexOf('Adr')>0,
WP:u.indexOf('IEMobile')>0,
BlackBerry:u.indexOf('BlackBerry')>0||u.indexOf('RIM')>0||u.indexOf('BB')>0,
MeeGo:u.indexOf('MeeGo')>0,
Symbian:u.indexOf('Symbian')>0,
iOS:u.indexOf('like Mac OS X')>0,
iPhone: u.indexOf('iPh')>0,
iPad:u.indexOf('iPad')>0,
//设备
Mobile:u.indexOf('Mobi')>0||u.indexOf('iPh')>0||u.indexOf('480')>0,
Tablet:u.indexOf('Tablet')>0||u.indexOf('iPad')>0||u.indexOf('Nexus 7')>0
};
//修正
if(match.Mobile){
match.Mobile = !match.iPad;
}
//基本信息
var hash = {
engine:['WebKit','Trident','Gecko','Presto'],
browser:['Safari','Chrome','IE','Firefox','Opera','UC','QQBrowser','QQ','Baidu','Maxthon','Sogou','LBBROWSER','Wechat','Taobao','Alipay','Weibo','Suning','iQiYi'],
os:['Windows','Linux','Mac','Android','iOS','iPhone','iPad','WP','BlackBerry','MeeGo','Symbian'],
device:['Mobile','Tablet']
};
_this.device = 'PC';
_this.language = (function(){
var g = (navigator.browserLanguage || navigator.language).toLowerCase();
return g=="c"?"zh-cn":g;
})();
for(var s in hash){
for(var i=0;i< hash[s].length;i++){
var value = hash[s][i];
if(match[value]){
_this[s] = value;
}
}
}
//版本信息
var version = {
'Chrome':function(){
return u.replace(/^.*Chrome\/([\d.]+).*$/,'$1');
},
'IE':function(){
var v = u.replace(/^.*MSIE ([\d.]+).*$/,'$1');
if(v==u){
v = u.replace(/^.*rv:([\d.]+).*$/,'$1');
}
return v!=u?v:'';
},
'Firefox':function(){
return u.replace(/^.*Firefox\/([\d.]+).*$/,'$1');
},
'Safari':function(){
return u.replace(/^.*Version\/([\d.]+).*$/,'$1');
},
'Maxthon':function(){
return u.replace(/^.*Maxthon\/([\d.]+).*$/,'$1');
},
'QQBrowser':function(){
return u.replace(/^.*QQBrowser\/([\d.]+).*$/,'$1');
},
'QQ':function(){
return u.replace(/^.*QQ\/([\d.]+).*$/,'$1');
},
'Baidu':function(){
return u.replace(/^.*BIDUBrowser[\s\/]([\d.]+).*$/,'$1');
},
'UC':function(){
return u.replace(/^.*UC?Browser\/([\d.]+).*$/,'$1');
},
'Wechat':function(){
return u.replace(/^.*MicroMessenger\/([\d.]+).*$/,'$1');
},
'Taobao':function(){
return u.replace(/^.*AliApp\(TB\/([\d.]+).*$/,'$1');
},
'Alipay':function(){
return u.replace(/^.*AliApp\(AP\/([\d.]+).*$/,'$1');
},
'Weibo':function(){
return u.replace(/^.*weibo__([\d.]+).*$/,'$1');
},
'Suning':function(){
return u.replace(/^.*SNEBUY-APP([\d.]+).*$/,'$1');
},
'iQiYi':function(){
return u.replace(/^.*IqiyiVersion\/([\d.]+).*$/,'$1');
}
};
_this.version = '';
if(version[_this.browser]){
_this.version = version[_this.browser]();
}