JS判斷是否是微信頁面，判斷手機操作系統（ios或android）並跳轉到不同下載頁面

JS判斷客戶端是否是iOS或者Android

$(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終端
if (isAndroid) {
window.location.href = 'appDownload.html';
}
if (isIOS) {
window.location.href = 'iosDownload.html';
}
});

JS判斷是否是微信客戶端

function is_weixin() {
    var ua = window.navigator.userAgent.toLowerCase();
    if (ua.match(/MicroMessenger/i) == 'micromessenger') {
        return true;
    } else {
        return false;
    }
}

JS判斷是否電腦端

function IsPC() {
    var userAgentInfo = navigator.userAgent;
    var Agents = ["Android", "iPhone",
        "SymbianOS", "Windows Phone",
        "iPad", "iPod"];
    var flag = true;
    for (var v = 0; v < Agents.length; v++) {
        if (userAgentInfo.indexOf(Agents[v]) > 0) {
            flag = false;
            break;
        }
    }
    return flag;
}