const CACHE_NAME = "version-26-6-19aaaii"; const urlsToCache = ["index.html", "offline.html"]; const self = this; //Install SW self.addEventListener("install", (event) => { event.waitUntil( caches.open(CACHE_NAME).then((cache) => { console.log("Opened cache"); return cache.addAll(urlsToCache); }) ); }); //Listen for requests self.addEventListener("fetch", (event) => { event.respondWith( caches.match(event.request).then(() => { return fetch(event.request).catch(() => caches.match("offline.html")); }) ); }); //Activate the SW self.addEventListener("activate", (event) => { const cacheWhiteList = []; cacheWhiteList.push(CACHE_NAME); event.waitUntil( caches.keys().then((cacheNames) => Promise.all( cacheNames.map((cacheName) => { if (!cacheWhiteList.includes(cacheName)) { return caches.delete(cacheName); } }) ) ) ); });