ReactJS Handwritten Notes 🤩 [Part 1]

Explore ReactJS with ease through my 27-page handwritten and illustrated PDF guide, designed to feel like friendly notes from a college buddy. It is inspired by react.dev 's simplicity and offers clear explanations and visual aids, serving as a handy reference for beginners and experienced developers alike.

Included Topics:

1. How to write your first React component?
2. When and how to create multi-component files?
3. How to add markup to JavaScript with JSX?
4. How to use curly braces with JSX to access JavaScript functionality from your components?
5. How to configure components with props?
6. How to conditionally render components?
7. How to render multiple components at a time?
8. How to avoid confusing bugs by keeping components pure?
9. How to handle user-initiated events?
10. How to make components “remember” information with state?
11. How React updates the UI in two phases?
12. Why state doesn’t update right after you change it?
13. How to queue multiple state updates?
14. How to update an object in state?
15. How to update an array in state?