ReactJs
Introduction to React.js
React.js is a popular JavaScript library for building user interfaces, especially single-page applic...
JSX Syntax
JSX (JavaScript XML) is a syntax extension for JavaScript used in React to describe what the UI shou...
Components
Components are the building blocks of a React application. They can be **functional** or **class-bas...
Props
Props (short for properties) allow data to be passed from a parent component to a child component. T...
State and useState Hook
State allows components to keep track of dynamic data and re-render when that data changes. In funct...
useEffect Hook
`useEffect` is used to perform side effects in functional components, such as fetching data, updatin...
Handling Events
React uses event handlers similar to HTML, but with camelCase syntax. Events like clicks, form submi...
Conditional Rendering
Conditional rendering lets you display different UI elements depending on certain conditions, using ...
Lists and Keys
You can render lists in React by using the `map()` function. Each item should have a unique key to h...
React Router Basics
React Router is used for adding navigation to your application. It allows you to create different ro...
Context API
The Context API allows you to share data across multiple components without having to pass props dow...
Custom Hooks
Custom hooks let you extract and reuse stateful logic across multiple components. They are regular f...
Forms and Controlled Components
Controlled components are form elements like inputs and textareas that are controlled by React state...
Refs and useRef Hook
Refs are used to directly access DOM elements or persist values across renders without causing re-re...
useMemo and useCallback
React provides `useMemo` and `useCallback` hooks to optimize performance by memoizing values and fun...
Error Boundaries
Error boundaries catch JavaScript errors in child components and display a fallback UI instead of cr...
React Lazy Loading and Suspense
Lazy loading lets you load components only when they are needed, improving performance. `Suspense` a...
Performance Optimization with React.memo
`React.memo` prevents a component from re-rendering unless its props have changed. This is useful fo...
React Portals
Portals allow you to render children into a DOM node outside of the parent component hierarchy. This...
React Testing with Jest and React Testing Library
Testing ensures your components work correctly. Jest is a testing framework, and React Testing Libra...
React with TypeScript
TypeScript adds static type checking to React, making your code more robust and easier to maintain. ...
Code Splitting
Code splitting breaks your application into smaller bundles that can be loaded on demand. This impro...
Deployment
You can deploy React apps to various platforms like Vercel, Netlify, or GitHub Pages. Use `npm run b...
React and APIs
React works seamlessly with APIs to fetch and display data. You can use the Fetch API or libraries l...
Server-Side Rendering (SSR) with Next.js
Next.js enables server-side rendering and static site generation for React apps, improving performan...