RepoFlow Features

A JavaScript library for building user interfaces.

• Getting Started
• Installation
• Usage
• Hooks
• FAQ
• License

This package contains the core React runtime. For web apps, you’ll typically use it together with react-dom.

npm install react@19.2.4 react-dom@19.2.4

Render your app using react-dom/client:

import { StrictMode } from 'react';
		import { createRoot } from 'react-dom/client';
		import App from './App';

	createRoot(document.getElementById('root')).render(
	  <StrictMode>
	    <App />
	  </StrictMode>
	);

Build your UI by composing small components. Components can be functions that return JSX.

export default function Button(props) {
		  return <button type="button">{props.children}</button>;
		}

Hooks let you use state and other React features in function components.

import { useState } from 'react';

		export default function Counter() {
	  const [count, setCount] = useState(0);

	  return (
	    <button type="button" onClick={() => setCount(count + 1)}>
	      Count: {count}
	    </button>
	  );
	}

Not necessarily. React can be used standalone, but many teams prefer frameworks for routing, data fetching, and build tooling.

MIT