React 19 Crash Course Part 1 — Introduction, Vite Setup & How React Updates the DOM

Kickstart your React journey with this beginner-friendly crash course, where everything is explained with simple words and real-life examples! Learn what React is, how it updates the DOM using the virtual DOM and diffing algorithm, and set up a modern development environment with Vite.

🔹 Learning Goals:
✅ Understand what React is and why it's popular.
✅ Learn how React efficiently updates the DOM with a virtual DOM.
✅ Set up a React 19 project using Vite.
✅ Explore the shift from Create React App to Vite and understand the benefits.
✅ Learn what npm is and how it helps manage your project's dependencies.

Code:
https://github.com/Catherine358/time-travel-planer

Sources:
What is React Used for: When and Why to Use React: https://jaydevs.com/what-is-react-used-for/

#react #reactcrashcourse #reactcourse #frontenddevelopment #reactforbeginners

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Chapters:
00:00 Welcome, who this course is for.
01:00 What Even Is React?
02:45 Why Learn React in 2025
03:35 Accessibility First — Always
03:55 Project Setup with Vite + React
04:55 What is npm?
09:00 Why main is Better Than div
09:45 What’s New in React 19?
10:40 What’s Next in Part 2

Видео React 19 Crash Course Part 1 — Introduction, Vite Setup & How React Updates the DOM канала KatrInTechLand