WebApps Offline com ServiceWorkers

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JOSELITO.NINJA WEB APPS OFFLINE Hangout - GDG Belo Horizonte

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@joselitojunior1

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MOBILE @joselitojunior1

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NATIVO v  WEB @joselitojunior1

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NATIVO v  WEB @joselitojunior1

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@joselitojunior1

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@joselitojunior1 PROGRESIVE  APPS

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@joselitojunior1 PROGRESIVE  APPS offline first responsive fresh content https safe indexable installable linkable engageble

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@joselitojunior1 PROGRESIVE  APPS offline first responsive fresh content https safe indexable installable linkable engageble

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Olá, Joselito • Modelo e atriz • Instrutor, palestrante • Ex-BBB • GDG Organizer • Fã de F1 • Resolvedor® de problemas • #chrominho

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@joselitojunior1 OFFLINE APPS

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@joselitojunior1 hIps://speakerdeck.com/joselitojunior1

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@joselitojunior1 OFFLINE ===  USER  EXPERIENCE

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SERVICE  WORKERS @joselitojunior1

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@joselitojunior1

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SERVICE  WORKERS @joselitojunior1 Registro do SW no navegador

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@joselitojunior1 if ('serviceWorker' in navigator) { navigator.serviceWorker.register('/ssw.js', { scope: '/' }).then(function(reg) { // Service Worker registrado! }).catch(function(error) { // Não foi possível registrar o Service Worker console.log(error); }); };

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@joselitojunior1 this.addEventListener('install', function(event) { event.waitUntil( caches.open('cache-versao-1').then(function(cache) { return cache.addAll([ '/public/', '/public/index.html', '/public/estilo.css', '/public/app.js', '/public/image-list.js', '/public/info.json' ]); }) ); });

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@joselitojunior1 this.addEventListener('fetch', function(event) { event.respondWith( // Mágica! ); });

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@joselitojunior1 this.addEventListener('fetch', function(event) { event.respondWith( // Response() ); });

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SERVICE  WORKERS @joselitojunior1 Response()

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@joselitojunior1 new Response('Hello from GDG Humildão');

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@joselitojunior1 new Response('

Hello from GDG Humildão!

', { headers: { 'Content-Type': 'text/html' } })

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@joselitojunior1 fetch(event.request)

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@joselitojunior1 caches.match('/fallback.html');

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@joselitojunior1 caches.match('/fallback.html');

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SERVICE  WORKERS @joselitojunior1 onfetch()

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@joselitojunior1 self.addEventListener('fetch', function(event) { event.respondWith( caches.match(event.request).then(function(response) { return response || fetch(event.request); }) ); });

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@joselitojunior1 self.addEventListener('fetch', function(event) { event.respondWith( caches.open('mysite-dynamic').then(function(cache) { return cache.match(event.request).then(function (response) { return response || fetch(event.request).then(function(response) { cache.put(event.request, response.clone()); return response; }); }); }) ); });

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@joselitojunior1 self.addEventListener('fetch', function(event) { event.respondWith( caches.open('mysite-dynamic').then(function(cache) { return cache.match(event.request).then(function(response) { var fetchPromise = fetch(event.request).then(function(networkResponse) { cache.put(event.request, networkResponse.clone()); return networkResponse; }) return response || fetchPromise; }) }) ); });

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SERVICE  WORKERS @joselitojunior1 onsync()

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@joselitojunior1 self.addEventListener('sync', function(event) { if (event.id == 'update-leaderboard') { event.waitUntil( caches.open('mygame-dynamic').then(function(cache) { return cache.add('/leaderboard.json'); }) ); } });

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SERVICE  WORKERS @joselitojunior1 onactivate()

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@joselitojunior1 self.addEventListener('activate', function(event) { // Service Worker funcionando! });

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@joselitojunior1 self.onactivate = function(event) { event.waitUntil( caches.keys().then(function(cacheNames) { return Promise.all( cacheNames.map(function(cacheName) { if (expectedCaches.indexOf(cacheName) == -1) { return caches.delete(cacheName); } }) ); }) ); };

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