#Introduction to Node.js

Node.js is a runtime environment that allows developers to execute JavaScript code outside of the browser. Built on Chrome's V8 engine, it provides a fast and scalable solution for server-side applications. Node.js is widely used for building web servers, APIs, real-time applications, and microservices.

Node.jsNode.js

Why Use Node.js?

  • Asynchronous & Non-blocking: Uses an event-driven architecture, making it efficient for handling multiple requests.
  • Single Programming Language: JavaScript is used for both client-side and server-side development.
  • Fast Execution: The V8 engine compiles JavaScript to machine code, ensuring high performance.
  • Rich Package Ecosystem: The npm (Node Package Manager) offers thousands of open-source libraries.

Getting Started

To install Node.js, download it from the official website and verify the installation using:

node -v
npm -v

Once installed, you can run JavaScript files using:

node app.js

This makes Node.js a powerful tool for modern web development, supporting frameworks like Express.js, NestJS, and Next.js for server-side applications.

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Last updated on 1/25/2026