Node.js Tutorial: A Beginner’s Guide

Node.js Tutorial: A Beginner’s Guide

Node.js Tutorial: A Beginner’s Guide

Node.js is known as very powerful JavaScript-based Framework and the popularity of JavaScript application has increased in last few years.

From last couple of years Node.js has become one of the most popular platforms.

You can easily start with Node.js if you have knowledge about JavaScript functionality but after creating simple and basic 'Hello World' application, you will have to know how to structurize code and how you will deals with error.

Node.js is a server side platform that is built on Google Chrome's JS Engine.

Node.js uses as event-driven and non-blocking I/O model that makes it perfect, lightweight for real time applications.

Where Node.js Can Be Used

Node.js is an open source that is used for developing server-side and networking applications. You can create classic web application by using Node.js on server-side

Now We have web applications with real time two way connection not stateless web-based on the stateless request-response paradigm which mean client and server both can start communication for exchange data freely.

  1. Data Streaming Applications that means it can be used where you need to transfer data at high speed rate.
  2. JSON APIs based Applications
  3. Single Page Applications
  4. I/O bound Applications
Few things you should know about Node.js

Node.js, JavaScript-based Framework invented in 2009 by Ryan Dahl.

You can download it from https://nodejs.org/en/.

JavaScript is going very popular for their continuously enhancements in their library and Node.js is one of them that become most popular and coders are using it to create APIs.

  1. Extremely fast due to its library because It uses the V8 engine developed by Google and V8 compiles Javascript in native machine code.
  2. API developed in Node.js are asynchronous.
  3. There is no buffering with data in Node.js while uploading audio and video files because it cuts down the processing time.
  4. Node.js is an open source library which is freely available.
  5. Highly Scalable: Normally any I/O operations run either in synchronously (blocking) or asynchronously (non-blocking) amd with Node.js, it sends an asynchronous task to the event loop along with callback function and continuously execute the rest of its program and after finishing async operation, the event loop returns to the callback function to execute. In simple word, Reading and Writing to filesystem, storage or database is very fast in Node.js
  6. Node Package Manager is the Node.js package manager that works broadly and this is root of almost all deployment system for Node. This is very fast,consistent and robust.

There are lots of reason that make Node more popular than Rails and other alternatives.

You can develop fast application with Node.js such as Chat server, fast uploaded system.

You can see some important parts of Node.js :

important parts of Node.js

Click here to know How to install Node.js on window

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