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dotJS

Brendan give us insights into the process of standardisation of JavaScript at TC39, then covers some of the features of ES Next, and reminds us why we should always bet on JS.

For his 3rd dotJS appearance, Brendan give us insights into the process of standardisation of JavaScript at TC39, then covers some of the features of ES Next, and reminds us once again why we should always bet on JS.

A Brief History of JavaScript

Every day, we get 1 day closer to integrating WebAssembly into webpack as a first class citizen. But what does this mean and why should you care?

Every day, we get 1 day closer to integrating WebAssembly into webpack as a first class citizen. But what does this mean and why should you care? Sean reveals how webpack works under the hood.

Learn about its limitations and constraints, and how they are unlocking those constraints to make WebAssembly a pure and enjoyable experience.

Learn also how you can apply these concepts to your every day programming and walk away feeling excited about the future of webpack and WebAssembly.

Webpack+WebAssembly: Under the hood

What happens if we treat our templates as a specialized functional programming language that can be compiled into optimized bytecode and executed with a virtual machine? 

Most web applications today build their UIs by running JavaScript. 

But what happens if we instead treat our templates as a specialized functional programming language that can be compiled into optimized bytecode and executed with a virtual machine? 

Tom explores this novel architecture and some of the performance benefits it gives us.

Secrets of the DOM Virtual Machine

Isomorphic JavaScript, Universal JavaScript or Server Side Rendering have been a thing these past few years. 

Isomorphic JavaScript, Universal JavaScript or Server Side Rendering have been a thing these past few years. 

All the frameworks are now claiming that's an easy feature which only needs to be triggered. 

Matthieu explains why it's a bit more complicated but still an important benefit for JavaScript websites.

A few things to know about SSR

One of the primary goals for testing software is to have confidence that your software works as intended, but this doesn't give much insight into the quality of the software.

One of the primary goals for testing software is to have confidence that your software works as intended, but this doesn't give much insight into the quality of the software. Is it performant? How about accessible? Are we sending too much code? Answering these questions in an automated fashion today is hard, but that will be changing in the future.

In this talk, Trent explores how recent changes in technology give us a foundation to start answering the questions posed above and so much more. He looks at a near future where we have confidence that our software is functional and works well.

Working Well: The Future of Web Testing

Rafael shows how the Web Audio API filters are so versatile that they can handle arrays of any kind.

Rafael shows how the Web Audio API filters are so versatile that they can handle arrays of any kind. Since is possible to get information of the image's pixels as an array we could use it as an audio input and filter it as sound blurring it or highlighting the boundaries.

Processing Images using the Web Audio API

As JavaScript developers, we now have the power of our GPUs available to us, making great visual experiences more possible than ever.

As JavaScript developers, we now have the power of our GPUs available to us, making great visual experiences more possible than ever. 

Suby discusses the GPU programming mindset with shader programming- code that is executed on the GPU, via WebGL.

A Brief Intro to GPU Shader Programming in WebGL

Do you want to catch more bugs during development and keep your code maintainable?

Do you want to catch more bugs during development and keep your code maintainable? 

Stas shows you how to build your own linter using the TypeScript Language Service and integrate it with the editor.

Make your TypeScript compiler smarter!

A quick, fun look at how you might create a canvas-based video game using React and Redux.

A quick, fun look at how you might create a canvas-based video game using React and Redux. 

Mims talks about how the "game loop" works, how you can render to the canvas from within react, and how you might structure the state tree of a puzzle game.

Building a puzzle game in React/Redux

Filmed at https://2017.dotjs.io on December 1st in Paris.
More info & upcoming conferences: https://www.dotconferences.com

A day at dotJS 2017

Can GraphQL coexist with the other state management frameworks? What are the pros and cons of each combination?

External state management frameworks like Redux and MobX definitely helped with the problem of state-management, especially when the data is fetched from a REST endpoint.

But now that we're using GraphQL to take care of the data part, is an external state-management library even needed?

Can GraphQL coexist with the other state management frameworks? What are the pros and cons of each combination?

State management in a GraphQL era

It may come as a surprise to most people, but there are actually some tricky, nasty, counterintuitive parts in the JS language.

It may come as a surprise to most people, but there are actually some tricky, nasty, counterintuitive parts in the JS language. 

Elena gives a quick reminder about common mistakes when using some of the most subtle language features and how to avoid them (the mistakes... and also some of the features).

JavaScript: The Bad Parts

A technical and social commentary on how we often miss opportunities for new technology to improve others' lives, and how we can code ourselves out of a difficult box.

Accessibility can be a difficult and time consuming skillset to learn. User generated content is especially challenging to keep accessible for all.

By drawing inspiration from historic examples of 'guerilla accessibility', we can explore the use of technologies such as machine learning and script injection to improve the web for everyone.

Suz gives both a technical and social commentary on how we often miss opportunities for new technology to improve others' lives, and how we can code ourselves out of a difficult box.

New Tools for Old Problems

Adrian cowrote Django, yet he has come to believe that front-end frameworks are unnecessary for his own projects. 

Adrian cowrote Django, a prominent server-side framework, yet he has come to believe that front-end frameworks are unnecessary for his own projects. 

Here's his impassioned argument for avoiding JavaScript frameworks on the front end.

A framework author's case against frameworks

See how async + await works, best practices for flow control, and several solutions for handling errors.

Flow Control in JavaScript is hard! Native Promises in JavaScript have helped immensely, but the syntax is still a little callback-y. With Async + Await, we can write synchronous looking code without losing any of the benefits of JavaScript's asynchronous nature.

Wes explores how async + await works, best practices for flow control, and explores several solutions for handling errors.

Async + Await

The web platform in 2017 is powerful. What if we used that power for evil?

The web platform in 2017 is powerful. What if we used that power for evil? What kind of terrible UX could we create if our goal was to build *the worst web page in the world*?

Watch Feross livecode his way deep into the web platform, while demonstrating how new and old APIs can be used and abused for fun!

The Most Annoying Website (aka "The Power of the Web Platform")

See how a cheap $10 USB DVB-T/FM radio dongle can be hacked to receive commercial airplanes signals live and directly in JavaScript.

Commercial airplanes continuously transmit data packages via radio while flying. The protocol is unencrypted and is what allows public flight tracking websites to operate.

Thomas demonstrates how a cheap $10 USB DVB-T/FM radio dongle off Amazon can be hacked to receive these signals live and directly in JavaScript.

Getting Data From The Sky

See how to diagnose accessibility issues in your app and implement tooling to help you and your users succeed.

We build web applications and sites for the world, often without realizing how many users we're leaving behind. It's mission critical that we develop with accessibility in mind, to help users with permanent and temporary disabilities lead more independent, productive lives. 

The good news is that accessibility and JavaScript go hand-in-hand.

Marcy shows you how to diagnose accessibility issues in your app and implement tooling to help you and your users succeed.