ReactJS is one of the most popular JavaScript libraries for building scalable and performant applications. You'll need to focus on code quality, readability, maintainable, and scalability. I'll share my favorite tips along with code examples to show you how everything works.

12m read timeFrom freecodecamp.org
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Table of contents
1. Use Constants2. Use Helpers / Utils3. Learn How to Use Props4. Have One File for Each Component5. Don't Use Inline Functions6. Implement a 404 Component and Route7. Fetch Data Progressively8. Use Unique Values for Key Attributes9. Use Types10. Use the lazy() and Suspense() FunctionsWrapping Up
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