Node.js Tutorial - Learn Node.js

Node.js Tutorial
Node.js Tutorial – Node.js Tutorial for Beginners

Node.js Tutorial for Beginners: In this Introductory Tutorial of Node.js you will Learn:

  1. What is Node.js?
  2. Prerequisites for Learning Node.js
  3. Why you should Learn Node.js?
Node.js - History

Ryan Dahl: is a software engineer and the original developer of Node.js javascript runtime came up with a brilliant idea.

He thought it would be great to execute JavaScript outside the browser means on the Server, so he took Google's JavaScript V8 Engine and embedded with C++ Program and called it Node.

So Node is Runtime Environment for executing JavaScript Code on the Server.

What is Node.js?
Node Js is an open-source, cross-platform JavaScript runtime environment for executing JavaScript code on server side.

Node js is single-threaded, which employs a concurrency model based on an event loop. It doesn’t block the execution instead registers a callback which allows the application to continue.

It means Node.js can handle concurrent operations without creating multiple threads of execution so it can scale pretty well.

Most Popular JavaScript Engine:
  1. Google Chrome - V8 // Fastest JavaScript Engine
  2. Mozilla FireFox - SpiderMonkey
  3. Microsoft Edge - Chakra

Following things you should know in advance before you start learning Node.js.

  • Good knowledge of JavaScript.
  • Familiarity with ES6 Features.
  • Basic understanding of the DOM, NPM, node_modules, etc.
  • Visual studio code IDE - used for writing code (Optional)
  • Latest Chrome browser - used for debugging (Optional)
Why you should Learn Node.js?
  • Fast: Node.js is built on Google Chrome's V8 JavaScript Engine, so it's very fast.
  • Learning Curve: It is easy to learn Node.js and it's frameworks like Express.js etc.
  • Node.js - Asynchronous I/O and Event-Driven Architecture.
  • Single-Threaded: Node.js applications uses the "Single Threaded Event Loop Model" Architecture to handle multiple concurrent requests.
  • Open Source: Node.js has an open-source community and node.js is released under the MIT license.
  • Market demand: JavaScript and Node.js, React.js, Angular etc are top technologies that startups and MNCs are using nowadays. you will get paid high salary package if you will learn Node.js.

So, Let Start Learning Node.js