ReactJs

Course Fee : ₹2900.0

What is React.js?

React.js is an open-source JavaScript library developed by Facebook for building fast and interactive user interfaces. It allows developers to build reusable UI components and efficiently manage the state of applications.

Key Features of React.js

  • Component-Based Architecture
  • Virtual DOM for efficient rendering
  • One-Way Data Binding
  • Declarative Syntax
  • Strong Ecosystem with tools like React Router and Redux

Core Concepts in React.js

Components

Components are the building blocks of a React application. They are reusable, self-contained pieces of code that define how a part of the UI should appear.

JSX

JSX stands for JavaScript XML. It allows you to write HTML-like syntax within JavaScript, making it easier to create UI components.

State and Props

State: Internal data maintained by a component that can change over time.
Props: Short for properties, they are read-only data passed from a parent to a child component.

Lifecycle Methods

React components have lifecycle methods that allow developers to run code at specific stages, like mounting, updating, and unmounting.

React Ecosystem

  • React Router: For handling routing in single-page applications.
  • Redux: A state management library for large-scale applications.
  • Next.js: A React framework for server-side rendering and static site generation.
  • React Native: A framework for building mobile applications using React.

Getting Started with React.js

To get started with React.js, you can install it using npm or yarn:

npx create-react-app my-app

Or use Vite for a lightweight setup:

npm create vite@latest my-app --template react

Once set up, start the development server:

npm start