Lesson 5 of 5 40 min

Intro to React

React is the most popular JavaScript library for building UIs. Learn about components, JSX, props, state with useState, and the component lifecycle.

jsx

import { useState } from 'react';

export function Counter() {
  const [count, setCount] = useState(0);
  return (
    <button onClick={() => setCount(c => c + 1)}>
      Count: {count}
    </button>
  );
}

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