Mastering React Hooks: A Deep Dive

## Introduction to React Hooks React Hooks were introduced in React 16.8 and they let you use state and other React features without writing a class. This has revolutionized how we write React components, making them more concise and easier to reason about. ### The Power of useState The most fundamental hook is `useState`. It allows you to add state to your functional components. Here's a simple example: ```javascript import React, { useState } from 'react'; function Counter() { const [count, setCount] = useState(0); return ( ); } ``` This simple counter component demonstrates the core of `useState`. It returns a pair: the current state value and a function that lets you update it. ### Understanding useEffect The `useEffect` Hook lets you perform side effects in functional components. Data fetching, subscriptions, or manually changing the DOM in React components are all examples of side effects. It's the equivalent of `componentDidMount`, `componentDidUpdate`, and `componentWillUnmount` combined.