What is Node.js? I want a clear understanding about it.

+1 vote
I have just now completed my graduation and i am about to start my career, I want built my career as a developer but am not sure from where should I start. I have a heard about Node.js but I am not so clear with its understanding, so can any one guide me with a proper roadmap regarding the Node.js?
Jun 17 in Others by Damon Salvatore
• 5,490 points

1 answer to this question.

+1 vote

Node.js is a runtime environment which allows us to build backend and frontend applications using JavaScript

  • But it is more often used as a backend application
  • Let us understand this definition via client server architecture:

  • Frontend part deals with user interaction, A user can see only frontend part of application via web browsers.
  • Accepting the request from frontend server, searching the data from database and sending back the response to client’s browser is done by backend application.
  • This Backend application is written in javascript and complied using Node.js runtime environment
  • So, now you might have developed conceptual understanding of Node.js, so next lets see the core concepts of Node.js.

Working of Node.js:

  • Node.js works as a Single-threaded, Non-blocking and, in Asynchronous Manner.
  • Lets see this with diagram:
  • Node.js collects all these request in a single thread via events, so when the first event is being processed, it does not wait for the response but simply continues with the next request. This reduces the waiting time and cost.

To understand the core concepts of node.js have a look at this video:https://youtu.be/bOYFJrbSFsQ

To know the basics of JavaScript have a look at this video: https://youtu.be/o1IaduQICO0

Let us look after market popularity of Node.js :

  •  Companies like IBM, LinkedIn, Microsoft, GoDaddy, Groupon, Netflix, PayPal, SAP have adopted Node.js

Now let us see what are the job roles available after gaining the expertise of Node.js :

  • Node.js Developer
  • Application Developer
  • Software Developer
  • Full Stack Programmer
  • Back-End Developer

The average salary of a Node.js Developer ranges from $76,648 per year for a Web Developer to $128,450 per year for Backend Developer - Job Search | Indeed

At present the companies which offer Node.js Developer Jobs are: Accenture, PayPal, Infosys, IBM and Adobe

If you are willing to have Node.js Certification Training, then I would suggest you to visit edureka

I hope this helps you :)

Happy Learning

answered Jun 17 by ArchanaNagur
• 2,110 points

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