You're reading from React and React Native Build cross-platform JavaScript applications with native power for the web, desktop, and mobile

Product type Paperback

Published in May 2022

Publisher Packt

ISBN-13 9781803231280

Length 606 pages

Edition 4th Edition

Languages

JavaScript

Tools

React

Concepts

Front End Web Development

Authors (3):

Roy Derks

Mikhail Sakhniuk

Adam Boduch

View More author details

Table of Contents (36) Chapters

Preface

1. Part 1 – React

2. Chapter 1: Why React? FREE CHAPTER

3. Chapter 2: Rendering with JSX

4. Chapter 3: Component Properties, State, and Context

5. Chapter 4: Getting Started with Hooks

6. Chapter 5: Event Handling, the React Way

7. Chapter 6: Crafting Reusable Components

8. Chapter 7: The React Component Life Cycle

9. Chapter 8: Validating Component Properties

10. Chapter 9: Handling Navigation with Routes

11. Chapter 10: Code Splitting Using Lazy Components and Suspense

12. Chapter 11: Server-Side React Components

13. Chapter 12: User Interface Framework Components

14. Chapter 13: High-Performance State Updates

15. Part 2 – React Native

16. Chapter 14: Why React Native?

17. Chapter 15: React Native under the Hood

18. Chapter 16: Kick-Starting React Native Projects

19. Chapter 17: Building Responsive Layouts with Flexbox

20. Chapter 18: Navigating Between Screens

21. Chapter 19: Rendering Item Lists

22. Chapter 20: Showing Progress

23. Chapter 21: Geolocation and Maps

24. Chapter 22: Collecting User Input

25. Chapter 23: Displaying Modal Screens

26. Chapter 24: Responding to User Gestures

27. Chapter 25: Using Animations

28. Chapter 26: Controlling Image Display

29. Chapter 27: Going Offline

30. Chapter 28: Selecting Native UI Components Using NativeBase

31. Part 3 – React Architecture

32. Chapter 29: Handling Application State

33. Chapter 30: Why GraphQL?

34. Chapter 31: Building a GraphQL React App

35. Other Books You May Enjoy

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Chapter 10: Code Splitting Using Lazy Components and Suspense

Code splitting has been happening in React applications for some time now, long before there was any official support in the React API. With the latest version of React, there are new APIs that we can use that directly support code-splitting scenarios. Code splitting is necessary when you have larger applications with a lot of JavaScript code that must be delivered to a browser.

Big monolithic JavaScript bundles that house an entire application can create usability issues on initial page loads due to longer load times. With code splitting, we have more fine-grained control over how code makes its way from the server to the browser. This means more opportunities for us to properly handle load-time User Experience (UX).

In this chapter, you'll learn how to do this in your React applications by using the lazy() API and the Suspense components, two recent additions to React. Once you understand how these two pieces...