Understanding Side Effects in React In React, side effects are actions that occur outside the scope of the component, such as data fetching, subscriptions, or DOM manipulations. Managing side effects is crucial for building robust applications. Introducing useEffect useEffect is a Hook in React that allows you to perform side effects in function components. It serves as a replacement for lifecycle methods like componentDidMount , componentDidUpdate , and componentWillUnmount in class components. Basic Usage import React , { useEffect , useState } from ' react ' ; function ExampleComponent () { const [ data , setData ] = useState ( null ); useEffect (() => { // Fetch data from an API endpoint fetch ( ' https://api.example.com/data ' ) . then ( response => response . json ()) . then ( data => setData ( data )); }, []); // Empty dependency array means this effect runs once on mount return ( < div > { data ? data . map ( item => < p key = { item . id } > { item .…