React 19 Project Tutorial – AI Code Explainer

Post Content

​ 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: https://discord.gg/ux9BchWEW3
– Nebius AI Studio: https://studio.nebius.com/
– Open AI API: https://platform.openai.com/docs/overview
– React 19 & TailwindCSS: https://github.com/atapas/code-in-react-19

❤️ 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

🎉 Thanks to our Champion and Sponsor supporters:
👾 Drake Milly
👾 Ulises Moralez
👾 Goddard Tan
👾 David MG
👾 Matthew Springman
👾 Claudio
👾 Oscar R.
👾 jedi-or-sith
👾 Nattira Maneerat
👾 Justin Hual

—

Learn to code for free and get a developer job: https://www.freecodecamp.org

Read hundreds of articles on programming: https://freecodecamp.org/news   Read More freeCodeCamp.org 

#programming #freecodecamp #learn #learncode #learncoding