HTML5 App Download Page (H5 App 下载落地页) All In One

        /**
        浏览器版本信息
        * @type {Object}
        * @return {Boolean} 返回布尔值
        */
        function browser() {
            var u = navigator.userAgent.toLowerCase();
            var app = navigator.appVersion.toLowerCase();
            return {
                txt: u, // 浏览器版本信息
                version: (u.match(/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/) || [])[1], // 版本号
                msie: /msie/.test(u) && !/opera/.test(u), // IE内核
                mozilla: /mozilla/.test(u) && !/(compatible|webkit)/.test(u), // 火狐浏览器
                safari: /safari/.test(u) && !/chrome/.test(u), //是否为safair
                chrome: /chrome/.test(u), //是否为chrome
                opera: /opera/.test(u), //是否为oprea
                presto: u.indexOf('presto/') > -1, //opera内核
                webKit: u.indexOf('applewebkit/') > -1, //苹果、谷歌内核
                gecko: u.indexOf('gecko/') > -1 && u.indexOf('khtml') == -1, //火狐内核
                mobile: !!u.match(/applewebkit.*mobile.*/), //是否为移动终端
                ios: !!u.match(/\(i[^;]+;( u;)? cpu.+mac os x/), //ios终端
                android: u.indexOf('android') > -1, //android终端
                iPhone: u.indexOf('iphone') > -1, //是否为iPhone
                iPad: u.indexOf('ipad') > -1, //是否iPad
                webApp: !!u.match(/applewebkit.*mobile.*/) && u.indexOf('safari/') == -1 //是否web应该程序，没有头部与底部
            };
        }
        var timeout;
        function open_appstore() {
            var b=browser();
            if(b.ios||b.iPhone||b.iPad){
                window.location="itms-apps://itunes.apple.com/cn/app/qq-2011/id444934666?mt=8";
            }else if(b.android){
                //
            }
        }
        function try_to_open_app() {
            var b=browser();
            if(b.ios||b.iPhone||b.iPad){
                window.location="mqq:open";
            }else if(b.android){
                //
            }
            timeout = setTimeout('open_appstore()', 30);
        }
        try_to_open_app();

const log = console.log;

window.onhashchange = locationHashChanged;

function locationHashChanged(e) {
    log(`location.hash`, location.hash);
    log(`e.oldURL, e.newURL`, e.oldURL, e.newURL);
    // if (location.hash === "#pageX" ) {
    //     pageX();
    // }
},
  
const autoOpenApp = () => {
    try {
        log(`try open installed app!`);
        window.location = "mqq:open";
    } catch (err) {
        log(`open app uninstalled!`, err);
        // window.location = "mqq:open";
    }
    // window.location.addEventListener(`reload`, (e) => {
    //     log(`window.location reload`, e);
    // });
    setTimeout(() => {
        let ua = navigator.userAgent.toLowerCase();
        let env = ua.includes(`mobile`) ? true : false;
        if (env) {
            log(`app evn`, env);
            window.location="itms-apps://itunes.apple.com/cn/app/qq-2011/id444934666?mt=8";
        } else {
            window.location="http://itunes.apple.com/cn/app/qq-2011/id444934666?mt=8";
            log(`browser evn`, env);
        }
    }, 1000);
};

document.addEventListener(`DOMContentLoaded`, () => {
    let alink = document.querySelector(`[data-link="app"]`);
    if(alink) {
        alink.addEventListener(`click`, (e) => {
            e.preventDefault;
            autoOpenApp();
        });
    }
});