//This is the "Offline copy of pages" service worker//Add this below content to your HTML page, or add the js file to your page at the very top to register service worker if (navigator.serviceWorker.controller) { console.log('[PWA Builder] active service worker found, no need to register') } else { //Register the ServiceWorker navigator.serviceWorker.register('pwabuilder-sw.js', { scope: './' }).then(function(reg) { console.log('Service worker has been registered for scope:'+ reg.scope); }); }//This is the "Offline copy of pages" service worker//Install stage sets up the index page (home page) in the cache and opens a new cache self.addEventListener('install', function(event) { var indexPage = new Request('index.html'); event.waitUntil( fetch(indexPage).then(function(response) { return caches.open('pwabuilder-offline').then(function(cache) { console.log('[PWA Builder] Cached index page during Install'+ response.url); return cache.put(indexPage, response); }); })); });//If any fetch fails, it will look for the request in the cache and serve it from there first self.addEventListener('fetch', function(event) { var updateCache = function(request){ return caches.open('pwabuilder-offline').then(function (cache) { return fetch(request).then(function (response) { console.log('[PWA Builder] add page to offline'+response.url) return cache.put(request, response); }); }); };event.waitUntil(updateCache(event.request));event.respondWith( fetch(event.request).catch(function(error) { console.log( '[PWA Builder] Network request Failed. Serving content from cache: ' + error );//Check to see if you have it in the cache //Return response //If not in the cache, then return error page return caches.open('pwabuilder-offline').then(function (cache) { return cache.match(event.request).then(function (matching) { var report = !matching || matching.status == 404?Promise.reject('no-match'): matching; return report }); }); }) ); })

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