index.js

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

// 绑定事件
const bind = function(dom, event, fun) { // bind event
    if (dom.addEventListener) {
        dom.addEventListener(event, fun, !1);
    } else if (dom.attachEvent) {
        dom.attachEvent(event, fun);
    } else {
        throw new Error('不存在的方法')
    }
};

// 格式化url
const formatUrl = function(url, params){
    var arr = [];
    for (var p in params) {
        if (p && params[p]) {
            arr.push(p + '=' + encodeURIComponent(params[p]));
        }
    }
    arr = arr.join('&');
    var u = url.split("?");
    var newUrl = null;
    if (u.length == 2) {
        newUrl = u[0] + "?" + u[1] + "&" + arr;
    } else {
        newUrl = u[0] + "?" + arr;
    }
    return newUrl;
};

//使用计算时差的方案打开APP
const checkOpen = function(cb) {
    var _clickTime = +(new Date());

    function check(elsTime) {
        if (elsTime > 3000 || document.hidden || document.webkitHidden) {
            cb(1);
        } else {
            cb(0);
        }
    }

    //启动间隔20ms运行的定时器，并检测累计消耗时间是否超过3000ms，超过则结束
    var _count = 0, intHandle;
    intHandle = setInterval(function () {
        _count++;
        var elsTime = +(new Date()) - _clickTime;
        if (_count >= 100 || elsTime > 3000) {
            clearInterval(intHandle);
            check(elsTime);
        }
    }, 20);
};

// 判断浏览器
const Navigator = navigator.userAgent;
const ifAndroid = (Navigator.match(/(Android);?[\s\/]+([\d.]+)?/)) ? true : false;
const ifIos = Navigator.match(/iPhone|iPad|iPd/i) ? true : false;

// 安卓版本号
let androidVersion = Navigator.match(/Android\s*(\d+)/);
androidVersion = androidVersion ? (androidVersion[1] || 0) : 0;

const iframe = "plugIn_downloadAppPlugIn_loadIframe";
let isIfr = false;

// 打开APP
const openApp = function (option) {
    var openLink = null,
        downloadUrl = null;
    if (ifIos) {
        openLink = option.iosLink || null;
        // 开启应用宝跳转
        downloadUrl = (option.iosYyb || false) ? (option.yybDownloadUrl || null) : (option.iosDownloadUrl || null);
    } else if (ifAndroid) {
        openLink = option.androidLink || null;
        // 开启应用宝跳转
        downloadUrl = (option.androidYyb || false) ? (option.yybDownloadUrl || null) : (option.androidDownloadUrl || null);
    }
    var params = option.params || [];
    openLink = formatUrl(openLink, params); //格式化url 加参数
    // android5 及以上的高版本&& androidVersion >= 5
    if (ifAndroid && androidVersion >= 5) {
        var a = document.createElement("a"); //创建a元素
        a.setAttribute("href", openLink), a.style.display = "none", a.setAttribute("id", "aTag"), document.body.appendChild(a);
        document.getElementById('aTag').click();
    } else {
        window.location.href = downloadUrl;
    }
    // 设备是ios
    if (ifIos) {
        // 如果是自动跳转或者未开启Universal Link 用之前的链接 否则用 Universal Link
        // var iosUniversalLinkEnabled = (option.iosUniversalLinkEnabled || false) ? false : true
        // openLink = isAutoLaunchApp || iosUniversalLinkEnabled ? openLink : (option.ios9Link || null);

        setTimeout(function () {  // 必须要使用settimeout
            var a = document.createElement("a"); //创建a元素
            a.setAttribute("href", openLink), a.style.display = "none", a.setAttribute("id", "aTag"), document.body.appendChild(a);
            document.getElementById('aTag').click();
        }, 0);
    }

    checkOpen(function (opened) {
        // APP没有打开成功  并且开启自动跳转到下载页
        if (opened === 0 && option.autoRedirectToDownloadUrl) {
            window.location.href = downloadUrl;
        }
    });

};

// 初始化
const controlInit = function (option) {
    if (option.button) {
        option.button.setAttribute('href', 'javascript:void(0)');
        bind(option.button, 'click', function () {
            if (!isIfr) {
                var ifr = document.createElement("iframe");
                ifr.id = iframe;
                document.body.appendChild(ifr);
                document.getElementById(iframe).style.display = "none";
                document.getElementById(iframe).style.width = "0px";
                document.getElementById(iframe).style.height = "0px";
                isIfr = true;
            }
            // 打开APP
            openApp(option);
        });
    }
};

exports.controlInit = controlInit;