Book Image

Designing React Hooks the Right Way

By : Fang Jin
Book Image

Designing React Hooks the Right Way

By: Fang Jin

Overview of this book

React hook creates a unique solution for using states in function components to orchestrate UI communication. They provide you with an easy interface to write custom data management solutions with low development and maintenance costs. Understanding how Hooks are designed enables you to use them more effectively, and this book helps you to do just that. This book starts with a custom-crafted solution to reveal why Hooks are needed in the first place. You will learn about the React engine and discover how each built-in Hook can manage a persistent value by hooking into it. You will walk through the design and implementation of each hook with code so that you gain a solid understanding. Finally, you'll get to grips with each Hook's pitfalls and find out how to effectively overcome them. By the end of this React book, you'll have gained the confidence to build and write Hooks for developing functional and efficient web applications at scale.
Table of Contents (12 chapters)


Built-in hooks used in this custom hook: useState

When using the useState, we encountered quite a few issues that prevented a newcomer
from understanding how to use it properly, mainly from the inherited laggy behavior due to the fact that the state value does not change right after the dispatch.

const [state, dispatchState] = useState(0)

In the preceding line, if we understand the dispatchState function is to dispatch and request a change, then there's not much we need to do because that's how React designs the useState. However, most often we tend to think differently:

const [state, setState] = useState(0)

The preceding setState name is the main reason we push ourselves into trouble, because here we would expect the state to change right after the setState statement.

In Chapter 8, Use Ref to Hide Stuff, we used a useRef to locate the current value. There are two different ways to solve this problem: one is to design a container to keep...