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Learn React Hooks

Learn React Hooks - Second Edition

By : Bugl
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Learn React Hooks

Learn React Hooks

By: Bugl

Overview of this book

React Hooks allow you to easily encapsulate, reuse, and refactor logic with the same level of simplicity that components bring to user interface organization. In this second edition, React expert and author of many popular React books, Daniel Bugl guides you through the full spectrum of React Hooks, and teaches you how to handle forms, routing, and data fetching in modern React development. This edition is fully updated to React 19, with a revamped structure, expanded real-world use cases, and coverage of all newly introduced Hooks. Starting with the fundamentals, you'll gain a deep understanding of how Hooks work under the hood and how to apply Hooks patterns efficiently. The chapters guide you through using State, Reducer, and Effect Hooks to manage application state, side effects, and complex logic for building your first Hook-based app. You'll utilize Suspense and Context APIs for streamlined data fetching and state management, master Form Actions for handling submissions, and implement routing with Hooks. You’ll also create custom Hooks for advanced functionality and write tests for reliability. Finally, you’ll learn how to refactor an existing app with class components into modern Hooks architecture. By the end of this React book, you'll be well-equipped to use React Hooks to modernize and optimize your React projects.
Table of Contents (19 chapters)
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1
Introduction to Hooks
5
Using Hooks With Real-World Examples
13
Refactoring and Migrating Existing Code
17
Other Books You May Enjoy
18
Index

Using Hooks for performance optimizations

Certain Hooks can be used to optimize the performance of your app. Generally, the rule of thumb is to not optimize prematurely. This is especially true with the React Compiler, introduced in React 19. Nowadays, the React Compiler optimizes most cases for us automatically. So, keep in mind to only use these Hooks when you have identified a specific performance problem with your app. Generally, the rule of thumb is to not optimize prematurely unless you know it will be an expensive computation.

The React Compiler is a Babel plugin that can be manually installed, and it also ships with certain frameworks, such as Next.js. For more information on the React Compiler, please read the following page in the React docs: https://react.dev/learn/react-compiler.

useDeferredValue

The Deferred Value Hook can be used to defer low-priority updates (such as filtering a list) so that higher-priority updates (such as updating the text...

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Learn React Hooks
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