Tutorial(ttrl) on nodejs from basics to advanced

This tutorial is in progress ...

This tutorial has exercises from www.johnsmilga.com

Each serial no. below points to prefix of a js file in repo

1. Introduction

2. Global variables

3. Modules (every nodejs file is a module by default)

   Modules basics

   • a) Importing a module in a file and assigning it to a const variable
   • b) Importing a module in a file and assigning it to a const function
   • c) Importing a module in a file and assigning it to a generic object variable which holds everything
   • d) Importing a module (having a function invoked inside of it) doesn't need to be assigned to a variable as it will run by default

4. In a module we decide which variables to export & which ones to keep secret

5. Exporting a function from a module

6. Exporting arrays and objects from a module

7. Not explicitly exporting anything yet somehow when it's imported (using require function) the invoked function (present inside the exported module) runs by default.

8. os built-in module

9. path built-in module

10. fs built-in module (synchronous) ; default- contents of file is overwritten after it's run again

11. ...