What is RxHTML? The article does not make it clear, and Googling just comes up with that page. Something to do with "A programming language for board games powered by the JVM"?
RxHTML started as patterns emerged while building useful things with Adama, so RxHTML is a templating language on top of a reactive document. ( https://book.adama-platform.com/rxhtml/ref.html )
My web-dev skills are fairly old school where I usually just used Mustache to make things look nice, and RxHTML is my attempt at something like mustache except it respects HTML (rather than just string templating). The reason I wanted to build yet another template engine is that I wanted to deal with differentiation.
If you see the entire state of a page as S, and then f is the template such that f(S) is the web page; RxHTML is to address how to handle f(S + dS/dt...) where we can template efficiently as the underlying state changes.
This blog post was written for me to help clarify what RxHTML is to a friend.
That's fair as well. Honestly, this is the first version, and I've just been surprised by how little I've had to debug things. The handful of things that I've added to RxHTML are carrying me farther than I thought.