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sw.js
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var APP_PREFIX = 'FLAPWAPP_' // Identifier for this app.
var VERSION = 'version_02' // Version of the off-line cache.
var CACHE_NAME = APP_PREFIX + VERSION
var URLS = [ // An array with the all the files I want to get inside cache.
'/FLAPWAPP/',
'/FLAPWAPP/index.html',
'/FLAPWAPP/favicon.ico',
'/FLAPWAPP/fonts/orange_kid.ttf',
'/FLAPWAPP/css/style.css',
'/FLAPWAPP/js/main.js',
'/FLAPWAPP/js/jquery-3.3.1.min.js',
'/FLAPWAPP/assets/flaprite.png',
'/FLAPWAPP/assets/land.png',
'/FLAPWAPP/assets/pipe.png',
'/FLAPWAPP/assets/pipe-up.png',
'/FLAPWAPP/assets/pipe-down.png',
'/FLAPWAPP/assets/score-panel.png',
'/FLAPWAPP/assets/replay.png',
'/FLAPWAPP/assets/sky.png'
]
// Respond with cached resources
self.addEventListener('fetch', function (e) {
console.log('fetch request : ' + e.request.url)
e.respondWith(
caches.match(e.request).then(function (request) {
if (request) { // if cache is available, respond with cache
return request
} else { // if there are no cache, try fetching request
return fetch(e.request)
}
})
)
})
// Cache resources
self.addEventListener('install', function (e) {
e.waitUntil(
caches.open(CACHE_NAME).then(function (cache) {
console.log('installing cache : ' + CACHE_NAME);
return cache.addAll(URLS);
})
)
})
// Delete outdated caches
self.addEventListener('activate', function (e) {
e.waitUntil(
caches.keys().then(function (keyList) {
var cacheWhitelist = keyList.filter(function (key) {
return key.indexOf(APP_PREFIX)
})
// add current cache name to white list
cacheWhitelist.push(CACHE_NAME)
return Promise.all(keyList.map(function (key, i) {
if (cacheWhitelist.indexOf(key) === -1) {
console.log('deleting cache : ' + keyList[i] )
return caches.delete(keyList[i])
}
}))
})
)
})