Learn to build web applications using Node.js and the Express framework.

Become a MEAN Stack Developer

Node.js is a runtime environment that enables JavaScript to run outside the browser. In this module, we'll learn the fundamentals of Node.js to build portable applications. We'll learn about the components of Node.js and make patterns using these. We'll also explore the API to learn how to create modules and write code for unique data files. Moreover, we'll delve into the features and practices of JavaScript and build a REST API using the Express framework from scratch. Moving on, we'll use Passport.js and JSON web tokens to establish authentication tokens. We’ll then create a live trivia game with Socket.IO. By the end of this module, we'll be equipped with extensive knowledge to build rich and comprehensive Node.js applications running on the server with JavaScript.

Learn Node.js from Scratch

## Overview


The [`process`](https://nodejs.org/api/process.html)  object provides information about the current Node.js process and allows the program to interact with it.

The `process` is a global object, so it can be accessed anywhere inside our Node.js applications without using `require()`.

Now, we'll look at a few common `process` properties, such as `.argv` and `.env`.

## Access CLI arguments

The [`process.argv`](https://nodejs.org/api/process.html#process_process_argv) property allows us to access the values passed into the application from the command line. It stores the values in an array.

Follow the steps below to see how this works:

1. Add the following code to the `process.js` file:

# Overview


The [`process`](https://nodejs.org/api/process.html)  object provides information about the current Node.js process and allows the program to interact with it.

The `process` is a global object, so it can be accessed anywhere inside our Node.js applications without using `require()`.

Now, we'll look at a few common `process` properties, such as `.argv` and `.env`.

# Access CLI arguments

The [`process.argv`](https://nodejs.org/api/process.html#process_process_argv) property allows us to access the values passed into the application from the command line. It stores the values in an array.

Follow the steps below to see how this works:

1. Add the following code to the `process.js` file:

Node.js Overview

The Node.js API

JavaScript Essentials Review

Building a RESTful API with Express

Authentication with Passport.js and JSON Web Tokens

Build a Live Trivia Game with Socket.IO

Appendix

Conclusion

The process Module

Overview

Access CLI arguments