01 / Foundation
Understand the concept
Hooks were introduced in React 16.8 to allow functional components to use state and lifecycle features without class components.
Built-in Hooks like useState, useEffect, useMemo, useCallback, useRef, and useContext solve common development problems while keeping components simpler and more reusable.
02 / Implementation
Using useState
useState.tsx
import { useState } from "react";
export default function Counter() {
const [count, setCount] = useState(0);
return (
<button onClick={() => setCount(count + 1)}>
Count: {count}
</button>
);
}04 / Interview