Today I am going to talk about node JS.

 

Keep it mind Node JS is not a programming language like C Java or JavaScript or others

 

Node js is nothing but JavaScript runtime it helps us to execute JavaScript code outside of Browser.

Before Node we couldn't execute JavaScript outside of Browser.

But now we can execute JavaScript code almost everywhere by the help of node JS.

 

It has three types of models user defined, internal, external.

 

User define Module: Which module created by us

 

Internal Module: Node provides us some built in module it also known as internal module

 

Example: File System Module, Http Module and more

 

External Module: Which module we need to download vai NPM(Node Package Manager)