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)

Introducing the function component

"This pattern is designed to encourage the creation of these simple components that should comprise large portions of your apps." – Sophie Alpert

In this section, we are going to introduce you to the function component. When the function component was first introduced in React 0.14 in August 2015, it was named as a stateless pure function:

function StatelessComponent(props) {
  return <div>{}</div>

The main intention was that "stateless pure-function components give us more opportunity to make performance optimizations."

A function component with no state, by default, is designed to take the following function form:

Figure 1.2 – Function component definition

We are going to explore parts of a function component in detail in the next subsections.

Function props

The input argument of this function is referred to as a prop. Props take an...