The Problem

In my previous post we have written a simple app with Scala.js. In the end we managed to do everything we wanted to, but as we added more and more code a problem appeared – state management, the real app killer. Although our app didn’t do anything advanced, state handling and UI updates forced us to write a lot of additional code.

That post has shown that Scala.js allows us to write browser apps, but it also demonstrated that these apps can be vulnerable to other ills of frontend programming. To fix this issue we need to simplify our codebase. One way to do that is by adding a binding between the UI and what data our app holds. This way if the data changes in one place it will be automatically propagated to the other. We will implement this using Reactive Extensions. Read more


What is Scala.js?

Scala.js is compiler that targets JavaScript, unlike the traditional Scala compiler which targets JVM bytecode. What it means in practice – with Scala.js you can write Scala code that will be executed in the browser. Read more


I have been working and evaluating popular JavaScript frameworks such as AngularJS, Polymer, Ember and also emerging WebComponents for quite some time. In this blog post I will show advantages of React way of building scalable and well performing web applications with taste of functional programming.

In this tutorial we will introduce basics of ClojureScript as well and show how React plays nicely with ClojureScript through one of its wrappers called Reagent. Working app is included as well. Read more