service-worker.js

// service-worker.js

const CACHE_NAME = 'qr-code-generator-cache-v3';
const urlsToCache = [
    './',
    'static/style.css?v=202310212056',
    'static/generator.js?v=202310212056',
    'static/favicon-16x16.png',
    'static/favicon-32x32.png',
    'static/favicon-48x48.png',
    'static/apple-touch-icon-180x180.png',
    'https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css',
    'https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css',
    'https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js',
    'https://cdn.jsdelivr.net/npm/jquery@3.6.4/dist/jquery.min.js',
    'https://cdn.jsdelivr.net/npm/jquery.qrcode@1.0.3/jquery.qrcode.min.js'
];

self.addEventListener('install', function(event) {
    event.waitUntil(
        caches.open(CACHE_NAME)
            .then(function(cache) {
                console.log('Opened cache');
                return cache.addAll(urlsToCache);
            })
    );
});

self.addEventListener('fetch', function(event) {
    event.respondWith(
        caches.match(event.request)
            .then(function(response) {
                if (response) {
                    return response;
                }
                return fetch(event.request);
            })
    );
});

self.addEventListener('activate', function(event) {
    const cacheWhitelist = [CACHE_NAME];
    event.waitUntil(
        caches.keys().then(function(cacheNames) {
            return Promise.all(
                cacheNames.map(function(cacheName) {
                    if (cacheWhitelist.indexOf(cacheName) === -1) {
                        return caches.delete(cacheName);
                    }
                })
            );
        })
    );
});