What Is React Memo? React.memo is a higher-order component that helps optimize functional components by preventing unnecessary re-renders when props do not change. Basic Syntax const MemoizedComponent = React.memo(Component); Example…

What Is React Context API? The React Context API allows you to share state globally across components without passing props manually at every level. It’s ideal for themes, user authentication,…

React Router is a library for routing in React apps. It allows you to navigate between different components without reloading the page, creating a single-page application (SPA) experience. Installing React…

What Are Custom Hooks? Custom hooks are functions that start with use and allow you to reuse stateful logic across multiple functional components in React. Why Use Custom Hooks Reuse…

What Is useRef Hook? The useRef hook allows you to access DOM elements directly or store mutable values that persist across renders without causing re-renders. Basic Syntax const refContainer =…

What Is useEffect Hook? The useEffect hook allows functional components to perform side effects such as: Fetching data Updating the DOM Subscribing to events Timers and intervals It replaces lifecycle…

What Is useState Hook? The useState hook allows functional components in React to have state. It replaces the need for class components when managing data that changes over time. Basic…

Hooks are functions introduced in React 16.8 that allow you to use state and lifecycle features in functional components without using class components. Common React Hooks 1. useState Manages local…

Forms in React are typically handled using controlled components, where form inputs are bound to state. This allows React to fully control form data. Controlled Components Example import React, {…

Lists in React are created by using JavaScript’s map() function to iterate over an array and render components dynamically. Example: const numbers = [1, 2, 3, 4, 5]; const listItems…