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Learn React Hooks

You're reading from  Learn React Hooks

Product type Book
Published in Oct 2019
Publisher Packt
ISBN-13 9781838641443
Pages 426 pages
Edition 1st Edition
Languages
Author (1):
Daniel Bugl Daniel Bugl
Profile icon Daniel Bugl

Table of Contents (19) Chapters

Preface 1. Section 1: Introduction to Hooks
2. Introducing React and React Hooks 3. Using the State Hook 4. Writing Your First Application with React Hooks 5. Section 2: Understanding Hooks in Depth
6. Using the Reducer and Effect Hooks 7. Implementing React Context 8. Implementing Requests and React Suspense 9. Using Hooks for Routing 10. Using Community Hooks 11. Rules of Hooks 12. Building Your Own Hooks 13. Section 3: Integration and Migration
14. Migrating from React Class Components 15. Redux and Hooks 16. MobX and Hooks 17. Assessments 18. Other Books You May Enjoy

Implementing themes

After learning how to implement themes in a small example, we are now going to implement themes in our blog app, using React context and Hooks.

Defining the context

First, we have to define the context. Instead of defining it in the src/App.js file, in our blog app, we are going to create a separate file for the context. Having a separate file for contexts makes it easier to maintain them later on. Furthermore, we always know where to import the contexts from, because it is clear from the filename.

Let's start defining a theme context:

  1. Create a new src/contexts.js file.
  2. Then, we import React:
import React from 'react'
  1. Next, we define the ThemeContext. As before in our small example, we...
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