You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 

42 lines
947 B

const CACHE_NAME = "version-1";
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);
}
})
))
)
});