sw.js

this.addEventListener('install', function(event) { event.waitUntil( caches.open('v1').then(function(cache) { return cache.addAll([ '/', 'index.html', 'prices.html', 'infotext.html', 'tabs.html', 'cardsgrid.html', 'contacts.html', 'downloads.html', 'img/menu-open-icon-24px.svg', 'img/menu-close-icon-24px.svg', 'img/list-icon-24px.svg', 'img/grid-icon-24px.svg', 'img/check-icon-24px.svg', 'img/favicon-16x16.png', 'img/favicon-32x32.png', 'img/apple-touch-icon.png', 'img/icon-72x72.png', 'img/icon-96x96.png', 'img/icon-128x128.png', 'img/icon-144x144.png', 'img/icon-152x152.png', 'img/icon-192x192.png', 'img/icon-384x384.png', 'img/icon-512x512.png', 'img/maskable_icon.png', 'img/picture_1x1.svg', 'img/hero-bg.svg', 'manifest.json' ]) .then(function() { console.log('Success! App is available offline!'); }) }) ); }); self.addEventListener('fetch', function(event) { event.respondWith( caches.match(event.request) .then(function(response) { return response || fetch(event.request); }) ); });