js判断是app还是网页

function isApp() {
    var userAgent = navigator.userAgent.toLowerCase();
    return /app\/\w+/.test(userAgent);
}

if (isApp()) {
    console.log("当前环境是App内嵌的网页");
} else {
    console.log("当前环境是普通网页");
}

function isApp() {
    var isAndroid = /android/i.test(navigator.userAgent);
    var isiOS = /iphone|ipad|ipod/i.test(navigator.userAgent);

    if (isAndroid) {
        return window.location.href.startsWith('myapp://');
    } else if (isiOS) {
        return window.location.href.startsWith('myapp://') || window.location.href.startsWith('https://myapp.com');
    }
    return false;
}

if (isApp()) {
    console.log("当前环境是App内嵌的网页");
} else {
    console.log("当前环境是普通网页");
}

function isApp() {
    return typeof window.myAppBridge !== 'undefined';
}

if (isApp()) {
    console.log("当前环境是App内嵌的网页");
} else {
    console.log("当前环境是普通网页");
}