http://caibaojian.com/browser-ios-or-android.html
function is_weixin() {
var ua = window.navigator.userAgent.toLowerCase();
if (ua.match(/MicroMessenger/i) == 'micromessenger') {
return true;
} else {
return false;
}
}
JS判断手机操作系统（ios或android）并跳转到不同下载页面
http://www.bcty365.com/content-69-1807-1.html
$(function () {
var u = navigator.userAgent, app = navigator.appVersion;
var isAndroid = u.indexOf('Android') > -1 || u.indexOf('Linux') > -1; //g
var isIOS = !!u.match(/(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端
if (isAndroid) {
window.location.href = 'appDownload.html';
}
if (isIOS) {
window.location.href = 'iosDownload.html';
}
});