First dedicated JavaScript conference in Amsterdam.

Taking our biggest and longest-running JavaScript community forward, we're adding a new event to our family - a full-day conference covering the latest and greatest news and insights from the global JavaScript network.

Join us and a group of internationally known JavaScript enthusiasts to share inspiration and spend a great, summer day in one of the most unique Amsterdam locations.

JSNation

The largest and the oldest JavaScript community in Amsterdam kicked-off the first edition of a full-day conference having Amsterdam Zoo as a location.

AmsterdamJS Conference 2017 Aftermovie

The JavaScript language gets ever more powerful, but more complex to implement and deliver good performance. Learn about V8's new compiler pipeline.

The JavaScript language gets ever more powerful, but more complex to implement and deliver good performance. V8 has a new compiler pipeline and a unified approach to collecting feedback about your application. 

I’ll explain how we do it and present some problems. For example, in complex systems, facile "solutions" often distort the environment in unexpected ways. Welcome to the jungle *__*.

V8 and How It Listens to You

Security might seem like a difficult and intimidating area to approach, that's only backend-related. 

Let's talk about security. We can all agree it is very important, however the general feeling about it is that it's a difficult and intimidating area to approach. 

Furthermore, is very often seen as something only backend-related, however front-end plays an important role as well.

The Art of Keeping Your Application Safe

Let's talk about why reactive programming is awesome and how it can help with managing complexity, data and scaling your applications. 

Managing state in large application applications is hard. Managing async behavior is even harder. 

Let's talk about why reactive programming is awesome and how it can help with managing complexity, data and scaling your applications. 

Also, remember the callback hell?! Well, we once have been PROMISED that all will be good. And guess what, we OBSERVED we can do better. Let's deep dive into how observables are much better than promises.

RxJS All Things

WebGL is not so scary and difficult as many people think.

WebGL is not so scary and difficult as many people think. Let`s have a quick tour over WebGL nature and ecosystem.

WebGL Practical Application

Makepad is an experimental livecoding environment, which compiles JS to run on the GPU and renders every UI pixel using webGL. 

This talk is about makepad (http://makepad.github.io), an experimental livecoding environment which renders every UI pixel using webGL and runs multithreaded. 

Makepad compiles JS to run on the GPU which opens up many powerful angles to styling and data visualisation.

In this talk i will showcase the editor, rendering architecture and goals of Makepad: find the fun of programming.

Makepad: Rethinking Web UI's with WebGL

Typescript was warmly welcomed with all our developers from C++, Java and C# background. So it was only a question of time for our public JavaScript SDK to be completely rewritten in TS, from scratch. 

Typescript was warmly welcomed with all our developers from C++, Java and C# background. So it was only a question of time for our public JavaScript SDK to be completely rewritten in Typescript from scratch. 

In my talk I will focus on good and bad things that we experienced during development, and will tell how our initial thoughts played out.

Porting Web SDK from JS into TS

What is Serverless, how it works and why are people talking about it? But most important of all, how and why Serverless can be important for you?

What is Serverless, how it works and why are people talking about it? How many servers are there in Serverless computing? 

But most important of all, how and why Serverless can be important for you?
Don’t panic! This talk will take you to the journey through the Serverless Galaxy with Node.js.

The Hitchhiker's Guide to the Serverless Galaxy

Refactoring or changing an API of a lib you maintain might not be a fun task. But, sometimes it is required.

Refactoring or changing an API of a lib you maintain might not be a fun task. But sometimes it is required. If you are going to do it anyway, you don't want to do this manually anyway. So with the power of ASTs & codemods you can automate this & have confidence in the result

Automating Front-End Refactoring

Creating a stable and reproducible development environment can be a hassle. Docker comes to the rescue with lightweight containers that isolate each application component with minimal overhead.

Creating a stable and reproducible development environment can be a hassle. The more components you have the less feasible it becomes to run them all together on your laptop. 

Using Vagrant helps with reproducibility and isolation but putting all components on a single VM is very different from the way they will run in production. 

Docker comes to the rescue with lightweight containers that isolate each application component with minimal overhead.

Why You Should Care About Docker

The new kid on the block in browser land is WebAssembly. It allows precompiled code to run at native speed, connected via JavaScript to your browser. 

The new kid on the block in browser land is WebAssembly. It allows precompiled code to run at native speed, connected via JavaScript to your browser. 

But how does it work? What are the (dis)advantages? Can we optimise our SPA with it? With many examples, I will talk you through the setup, pitfalls and rough edges.

WebAssembly: the Final Frontier

Assuming everyone uses the web with a 10 Mbps connection and a Macbook Pro is rather utopian. 

Assuming everyone uses the web with a 10 Mbps connection and a Macbook Pro it's rather utopian. 

At Udacity we have a daily traffic of millions of page views from people all around the globe and we always aim to serve the best experience possible even if you're browsing the sites with an old Android with a 3G connection. 

We'll see what critical steps we follow to make sure we are making our sites as fast as possible.

The Road to Web Performance in 3 Critical Steps

This talk presents the results of the first empirical investigation on PWAs, showing that the PWA and service workers technology is promising in terms of energy efficiency.

Mobile web apps represent a large share of the Internet today. However, they still lag behind native apps in terms of user experience. 

Progressive Web Apps (PWAs) are a new technology introduced by Google that aims at bridging this gap, with a set of APIs known as service workers at its core. 

In this talk Ivano presents an empirical study that evaluates the impact of service workers on the energy efficiency of PWAs, when operating in different network conditions on two different generations of mobile devices. 

This talk presents the results of the first empirical investigation on PWAs, showing that the PWA and service workers technology is promising in terms of energy efficiency.

Are Service Workers Draining My Battery?

As a guitar player, I usually use some effect-pedals to change the sound of my guitar. I started wondering: “What if, it would be possible to recreate these pedals using the web-audio-api?”

Changing Live Audio with the Web-Audio-Api

Virtual DOM is generally considered to give the best performance for web applications. How can this be given it is such an inefficient algorithm?

Virtual DOM is generally considered to give the best performance for web applications. How can this be given it is such an inefficient algorithm? 

I will give an overview of popular Virtual DOM implementations and I will introduce our Virtual DOM library, MaquetteJS. 

I will also show how Virtual DOM makes unit testing easy. I will demonstrate how we achieve 100% code coverage on all our visual components using fast-running NodeJS unit tests.

Benefits of Virtual DOM

A deep dive on how Uber leverages javascript, across its engineering orgs.

Join this session for a deep dive on how Uber leverages javascript across its engineering orgs. From building frontend properties with a full javascript stack using express and react to the tools and infrastructure we use to automate best practices.

JSNation 2017

Jun 8 | Amsterdam, Netherlands