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React and React Native

You're reading from   React and React Native Build cross-platform JavaScript and TypeScript apps for the web, desktop, and mobile

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Product type Paperback
Published in Apr 2024
Publisher Packt
ISBN-13 9781805127307
Length 508 pages
Edition 5th Edition
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Authors (3):
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Adam Boduch Adam Boduch
Author Profile Icon Adam Boduch
Adam Boduch
Mikhail Sakhniuk Mikhail Sakhniuk
Author Profile Icon Mikhail Sakhniuk
Mikhail Sakhniuk
Roy Derks Roy Derks
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Roy Derks
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Toc

Table of Contents (33) Chapters Close

Preface 1. Part I: React
2. Why React? FREE CHAPTER 3. Rendering with JSX 4. Understanding React Components and Hooks 5. Event Handling in the React Way 6. Crafting Reusable Components 7. Type-Checking and Validation with TypeScript 8. Handling Navigation with Routes 9. Code Splitting Using Lazy Components and Suspense 10. User Interface Framework Components 11. High-Performance State Updates 12. Fetching Data from a Server 13. State Management in React 14. Server-Side Rendering 15. Unit Testing in React 16. Part II: React Native
17. Why React Native? 18. React Native under the Hood 19. Kick-Starting React Native Projects 20. Building Responsive Layouts with Flexbox 21. Navigating Between Screens 22. Rendering Item Lists 23. Geolocation and Maps 24. Collecting User Input 25. Responding to User Gestures 26. Showing Progress 27. Displaying Modal Screens 28. Using Animations 29. Controlling Image Display 30. Going Offline 31. Other Books You May Enjoy
32. Index

Code Splitting Using Lazy Components and Suspense

Code splitting has been a significant part of React applications for many years, even before official support was included in the React API. The evolution of React has brought about APIs that are specifically designed to assist in code-splitting scenarios. Code splitting becomes crucial when dealing with large applications containing a vast amount of JavaScript code that needs to be delivered to a browser.

In the past, monolithic JavaScript bundles containing an entire application could cause usability issues due to long initial page load times. Thanks to code splitting, we now have much more granular control over how code is transferred from the server to the browser. This gives us ample opportunities to optimize load-time User Experience (UX).

In this chapter, we will revisit how to implement this in your React applications by using the lazy() API and the Suspense components. These features are very powerful tools in the...

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