工作上有些页面的需求要区分pc/wap进行不同跳转；区分安卓/ios进行兼容；区分微信/qq/支付宝/第三方浏览器进行不同处理，这里做了下汇总记录，方便快速查阅。
是否是安卓/ios
<script type="text/javascript">
var u = navigator.userAgent;
var isAndroid = u.indexOf('Android') > -1 || u.indexOf('Adr') > -1; //android终端
var isiOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端
alert('是否是Android：'+isAndroid);
alert('是否是iOS：'+isiOS);
</script>
是否是微信/qq/支付宝、
var ua = navigator.userAgent.toLowerCase();
if(ua.match(/MicroMessenger/i)=="micromessenger") {
//微信环境
} else if (ua.match(/QQ/i) == "qq") {
//qq环境
}else if(ua.match(/Alipay/i)=="alipay"){
//支付宝环境
}else{
//第三方浏览器环境
}
判断PC/wap端
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";
// document.writeln("您的浏览设备为：");
if (bIsIpad || bIsIphoneOs || bIsMidp || bIsUc7 || bIsUc || bIsAndroid || bIsCE || bIsWM) {
//移动wap端
} else{
//pc端
}
