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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

Creating a new route and using the Param Hook

Now that we have React Router set up successfully, we can start creating a new route for viewing a single post. This route will look as follows: /post/:id, with :id being a URL param containing the id of a post to be viewed.

A URL param is a parameter used in an URL to define dynamic content. For example, in the /post/:id route, the /post/ part would be a static string, but the :id will be replaced with a dynamic post ID. Let’s assume you have an URL that ends with /post/8, that would mean that the route matches with the id param being set to 8.

Let’s get started setting up the page and route:

  1. Copy the Chapter08_1 folder to a new Chapter08_2 folder by executing the following command:
    $ cp -R Chapter08_1 Chapter08_2
    
  2. Open the new Chapter08_2 folder in VS Code.
  3. Edit src/api.js and define a new function to fetch a single post:
    export async function fetchPost({ id }) {
     ...
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Learn React Hooks
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