Amigo, você está sem conexão com a internet!

In this session, we will learn about the new ServiceWorker specification that Google, Mozilla and others are developing and how it can fill the gap between native apps and the web. We will also hear about the upcoming derived specs that will allow you to run web apps in the background, receive push notifications and much more.

Growing to become one of the largest sites on the Internet comes with a unique set of problems. Learning how to and adopt, and doing so without losing sight of content creator's voice proves tricky. This talk details some of the frontend tools we've built and approaches we've taken to service our millions of users at scale.

Graphics programming is significantly different than DOM manipulation. What does low level graphics programming look like without high level abstractions? WebGL provides us low level capabilities for high quality real time rendering portably in the browser.

Patterns for maintainability and performance

In this talk, Chris Mills will discuss the historic problems with web apps and which technologies are stepping up to fill the holes. This includes device APIs such as Web Activities, Camera, device orientation and nfc, offline apps (which are finally looking realistic thanks to service workers), installable apps, and high quality games and other immersive high performance experiences using such features as Web audio API, Pointer lock, asm.js and Emscripten.

Sabe aquele momento em que o seu CSS tem tantos seletores que é melhor correr o risco de duplicar seletores do que quebrar algo? Neste talk vamos ver como utilizar JS para limpar CSS legado em websites gigantes, rodando testes AB e com múltiplos desenvolvedores.

Even modest improvements in latency can have measurable impact on a website usage. As such, sites should have aggressive goals for both actual and user perceived latency. The most obvious metric is load time, also websites often optimize and minify resources, however, even with cached resources the browser still has to re-parse and execute the CSS and JS on every page load, it still has to lay out the HTML and redraw the UI. This slows down the actual navigation but can also add perceived slowness and often introduces a white flash. In order to improve actual and perceived latencies many sites are moving to the Single Page Application (SPA) model. These days the approach is widely employed by the likes of Facebook, Twitter, GitHub, and Flickr. These examples all feel kind of app-y. Sites with more traditional layouts can still reap the benefits. Some other folks like Medium.com is technologically a single page application but it is intended to feel like a traditional website. This talk is going to teach you how to use a hybrid rendering model in an attempt to get the best out of both worlds.