If you're reading this book, you might already have some idea of what React is. You also might have heard a React success story or two. If not, don't worry. I'll do my best to spare you from additional marketing literature in this opening chapter. However, this is a large book, with a lot of content, so I feel that setting the tone is an appropriate first step. Yes, the goal is to learn React and React Native. But, it's also to put together a lasting architecture that can handle everything we want to build with React today, and in the future.
This chapter starts with brief explanation of why React exists. Then, we'll talk about the simplicity that makes React an appealing technology and how React is able to handle many of the typical performance issues faced by web developers. Lastly, we'll go over the declarative philosophy of React and the level of abstraction that React programmers can expect to work with.
Let's go!