NodeJS

Node.js is an open-source and cross-platform runtime environment built on Chrome’s V8 JavaScript engine for executing JavaScript code outside of a browser. You need to recollect that NodeJS isn’t a framework, and it’s not a programing language. It provides an event-driven, non-blocking (asynchronous) I/O and cross-platform runtime environment for building highly scalable server-side applications using JavaScript.

Most people are confused and understand it’s a framework or a programing language. We often use Node.js for building back-end services like APIs, Web App, or Mobile App. It’s utilized in production by large companies like Paypal, Uber, Netflix, Walmart, etc.

Why to learn NodeJS?

1. Easy Scalability
2. Real time web apps
3. Fast Suite
4. Easy to learn and code
5. Advantage of Caching
6. Data Streaming
7. Hosting
8. Corporate Support

Example:

// Node.js program to display some
// text on consle screen 

// Accessing console module 
const console = require('console');

// Calling console.info() method 
console.info("Welcome to GeeksforGeeks");

Steps to Run: First, Download and Install in your system and then use the following command to run your code.

node filename.js

Output: The output will dispaly on console screen.

Welcome to GeeksforGeeks

Learn more about Node.js:

• Introduction to NodeJS
• Node.js NPM (Node Package Manager)
• Installation of Node.js on Windows
• Installation of Node.js on Linux

Complete References:

• Node.js Assert Complete Reference
• Node.js Buffer Complete Reference
• Node.js Console Complete Reference
• Node.js Crypto Complete Reference
• Node.js DNS Complete Reference
• Node.js File System Complete Reference
• Node.js Globals Complete Reference
• Node.js HTTP Module Complete Reference
• Node.js HTTP2 Complete Reference
• Node.js OS Complete Reference
• Node.js Path Module Complete Reference
• Node.js Process Complete Reference
• Node.js Query String Complete Reference
• Node.js Stream Complete Reference
• Node.js String Decoder Complete Reference
• Node.js Timers Complete Reference
• Node.js TLS/SSL Complete Reference
• Node.js UDP/DataGram Complete Reference
• Node.js URL Complete Reference
• Node.js Utility Complete Reference
• Node.js V8 Complete Reference
• Node.js VM Complete Reference
• Node.js Zlib Complete Reference
• Node.js Questions Complete Reference

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