Node.js Introduction

Last Updated : 2 Jul, 2026

Node.js is a runtime environment that allows JavaScript to run outside the browser for building server-side applications.

  • Built on the V8 JavaScript engine.
  • Supports asynchronous, event-driven programming.
  • Efficient for scalable network applications.
Nodejs
Nodejs

"Hello, World!" Program in Node.js

A “Hello, World!” program is the simplest way to begin with Node.js, showing how JavaScript runs outside the browser.

  • Executes JavaScript in a server or command-line environment.
  • Does not rely on a browser console.
JavaScript 
console.log("Hello, World!");

Output:

helloworld
Hello, World! in NodeJS

Working of Node.js

Node.js is a runtime environment that enables JavaScript to run outside the browser for building scalable server-side applications.

  • Built on the V8 JavaScript engine.
  • Uses asynchronous, event-driven architecture.
  • Suitable for scalable network applications.

Also Read:

Comment

Explore