Yesterday, while my working machine was crunching tons of numbers, graphs and maps to produce some (hopefully) meaningful data for a research work, I was looking for a simple guide to build a simple web page with ClojureScript. Unfortunately, I was not able to find something that was at the same time straightforward, simple, minimal and explained! So, I decided to write something by myself to avoid my pain to some future young clojurist. The main problem with the guides I’ve found online were:

1. They didn’t use Leiningen or any other build system. Now, this can also be good, but Leiningen is, in practice, a standard for Clojure developer, so I’d like to learn how to setup a project as soon as possible.
2. They are outdated.
3. They are not well explained. For sake of simplicity, they assume a lot of things. But I want to know what I’m writing!
4. They are not simple. I don’t want to write a full featured web application with a lot of dependencies and plugins! I want an hello world!

So, I hope to cover all this points. Let’s start!