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service-worker.js
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service-worker.js
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const version = '::v1';
const cacheName = 'exercise-pwa' + version;
const fileToCache = [
'index.html'
];
//install
self.addEventListener('install', function (event) {
event.waitUntil(
caches.open(cacheName)
.then(function (cache) {
console.log('open caches');
return cache.addAll(fileToCache);
})
)
});
//activated
self.addEventListener('activate', function (event) {
event.waitUntil(
caches.keys().then(function (keyList) {
return Promise.all(keyList.map(
function (key) {
if (key !== cacheName) {
console.log('SW old dihapus', key);
return caches.delete(key);
}
}
))
})
)
});
//fetch
self.addEventListener('fetch', function (event) {
event.respondWith(
caches.match(event.request)
.then(function (response) {
return response || fetch(event.request);
})
)
});