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React Basics

React is a popular JavaScript library for building user interfaces. It is widely used in modern web development, especially for single-page applications.

React follows a component-based architecture, where the user interface is broken down into reusable components. Each component can have its own state and behavior.

Here's a simple example of a React component:

SNIPPET
1import React from 'react';
2
3class HelloWorld extends React.Component {
4  render() {
5    return <h1>Hello, World!</h1>;
6  }
7}
8
9export default HelloWorld;
JAVASCRIPT
OUTPUT
:001 > Cmd/Ctrl-Enter to run, Cmd/Ctrl-/ to comment