Book Image

Learn React Hooks

By : Daniel Bugl
Book Image

Learn React Hooks

By: Daniel Bugl

Overview of this book

React Hooks revolutionize how you manage state and effects in your web applications. They enable you to build simple and concise React.js applications, along with helping you avoid using wrapper components in your applications, making it easy to refactor code. This React book starts by introducing you to React Hooks. You will then get to grips with building a complex UI in React while keeping the code simple and extensible. Next, you will quickly move on to building your first applications with React Hooks. In the next few chapters, the book delves into various Hooks, including the State and Effect Hooks. After covering State Hooks and understanding how to use them, you will focus on the capabilities of Effect Hooks for adding advanced functionality to React apps. You will later explore the Suspense and Context APIs and how they can be used with Hooks. Toward the concluding chapters, you will learn how to integrate Redux and MobX with React Hooks. Finally, the book will help you develop the skill of migrating your existing React class components, and Redux and MobX web applications to Hooks. By the end of this book, you will be well-versed in building your own custom Hooks and effectively refactoring your React applications.
Table of Contents (19 chapters)
Free Chapter
1
Section 1: Introduction to Hooks
5
Section 2: Understanding Hooks in Depth
13
Section 3: Integration and Migration

Implementing Reducer Hooks

After learning about actions, reducers, and the Reducer Hook, we are going to implement them in our blog app. Any existing State Hook can be turned into a Reducer Hook, when the state object or state changes become too complex.

If there are multiple setState functions that are always called at the same time, it is a good hint that they should be grouped together in a single Reducer Hook.

Global state is usually a good candidate for using a Reducer Hook, rather than a State Hook, because global-state changes can happen anywhere in the app. Then, it is much easier to deal with actions, and update the state-changing logic only in one place. Having all the state-changing logic in one place makes it easier to maintain and fix bugs, without introducing new ones by forgetting to update the logic everywhere.

We are now going to turn some of the existing State...