React 19 Project Tutorial – AI Code Explainer
Learn how to use React 19 and AI LLMs to code an AI-powered Code Explainer App from scratch.
We’ll design the app, configure an Express.js backend, set up a REST endpoint that talks to an LLM, and then integrate everything into a modern React 19 app (with Vite + TailwindCSS).
Course developed by @tapasadhikary
⭐️ Resources ⭐️
Code: https://github.com/tapascript/codesplain
Join Tapas's Discord: / discord
Nebius AI Studio: https://studio.nebius.com/
Open AI API: https://platform.openai.com/docs/over...
React 19 & TailwindCSS: https://github.com/atapas/code-in-rea...
❤️ Try interactive React courses we love, right in your browser: https://scrimba.com/freeCodeCamp-React (Made possible by a grant from our friends at Scrimba)
⭐️ Chapters ⭐️
0:00:00 Building With AI
0:01:51 What are We Building?
0:03:06 App Design
0:04:22 Configure AI LLMs
0:09:24 Configure Express.js Server
0:18:29 Create Explain Code REST Endpoint
0:25:01 Integrating LLM with API
0:35:15 Test API with Postman
0:39:04 React with Vite
0:42:24 Component Architecture
0:45:01 Heading
0:46:40 Explain Form
0:51:07 React 19 useActionState & Server Action
1:00:37 Code Explanation & Error
1:01:41 Formatting Output
1:03:46 Tasks & Bonus
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