Category: Javascript

Node.js is a very powerful JavaScript-based framework/platform built on Google Chrome’s JavaScript V8 Engine which makes it possible to run Javascript on the server side.

It is used to develop I/O intensive web applications like video streaming sites, single-page applications, and other web applications. It is awesome for real time stuff for example if we use PHP for this then it is not good for this because it consumes a lot of memory.

Using NPM — a tool that makes installing and managing Node modules — it’s quite easy to add many useful tools to your web development toolkit.

Node.js is open source, completely free, and used by thousands of developers around the world.

Node.js lets developers write JavaScript for both client and server side, thereby making it easy to send data between the server and the client to synchronize the data automatically.

The data changes on the server immediately reflect in the client and the webpage that displays this data automatically updates itself.

How to install Node.js on Windows



When we adding Javascript code to HTML page then it must be in between <script> and </script> tags. We can place Javascript in <body> and <head> section of an HTML…


A comment is a part of the program which doesn’t execute when running the program.

Its only purpose is to be read by someone who is editing the code.

In JavaScript, there are two types of comments –

  • Single line, and
  • Multiple lines

How to add comment in JavaScript