This book assumes that you already know what React is and what problems it solves for you. You may have written a small/medium application with React and you want to improve your skills and answer all your open questions.
React is one of the most popular libraries for creating user interfaces and it is well-known to be fast, thanks to its smart way of touching the DOM.
To follow this book, you will need to know how to use the terminal to install and run
npm packages in your
All the examples are written in ES2015, which you should be able to read and understand.
In this first chapter, we will go through some basics concepts which are important to master to use React effectively, but are non-trivial to figure out for beginners:
The difference between imperative and declarative programming
React components and their instances, and how React uses elements to control the UI flow
How React changes the way we build web applications, enforcing a different new concept of separation of concerns, and the reasons behind its unpopular design choice