React in Next.js

React is the core library used in Next.js to build user interfaces using components.

🧠 What is React?

React is a JavaScript library for building UI using reusable components.

It allows you to:

• Build reusable components
• Manage state efficiently
• Create dynamic user interfaces

🧩 Components

A React component is a function that returns UI.

Example:

export default function Hello() {
  return <h1>Hello, Next.js!</h1>;
}