<h2>Introduction to the course</h2><p>Node.js is an event-driven runtime environment. By using JavaScript on the server and inheriting a rich library of modules it creates scalable, fast network applications.</p><h2>Who is this course for?</h2><p>Statistically, developers are more prone to side with JavaScript as their preferred programming language as JS is considered the most powerful, and therefore, Node.js has the highest technological ranking as well.</p><p>If you&#x27;re looking to work with an environment that provides a wide range of uses for JavaScript development then you should try Node.js out.</p>

Node.js

<h2>What does this lesson cover?</h2><p>Node.js tackles the standard, yet not always simple steps that bring a web server to its final form. This lesson focuses on the very specific nature of Node and defines the underlying meaning behind its infamous Event Drivent architecture and Asynchronous programming. Node has an edge when it comes to web development and it&#x27;s about time you discover it.</p>

Introduction

<h2>What does this lesson cover?</h2><p>Node.js offers The Console Module which is a debugging-oriented console. The Console Module provides various methods to debug and construct streams on Node.js, and that will be the topic of this lesson.</p><p>We&#x27;ll be thoroughly assessing each of the three main methods and with the help of code examples from standard Node.js applications and purpose-built quizzes, we&#x27;ll tackle the topic in no time.</p>

Node.js Console

<h2>What does this lesson cover?</h2><p>In this lesson, we&#x27;ll be introducing Events as one of the core concepts in Node.js.</p><p>The development of a new connection, the reading of a file, and every other move a computer takes are called an Event.</p><p>The importance of Events stems from its full, in-depth definition and is clearly depicted in code examples from standard Node.js code.</p><p>The Events Module of Node.js is the focus of the lesson and follows throughout the section as well.</p><p>We&#x27;ll be dealing with the EventEmitter Object and Event handlers which will lead us to uncover the essence of Event-Driven Programming.</p>

<h2>What does this lesson cover?</h2><p>Here we&#x27;ll be getting used to the Node.js environment, to do so of course, we&#x27;ll need to install it first.</p><p>This lesson offers a step-by-step guide to installing the Node.js Environment and npm.</p>

Installing Node.js

<h2>What does this lesson cover?</h2><p>We&#x27;ll be covering a mixture of both surface-level and key features of Node.js in this lesson.</p><p>We&#x27;ll be going more in-depth into the prerequisites, including JavaScript knowledge, and distinguishments between Node.js and the browser.</p>

Basic Concepts

<h2>What does this lesson cover?</h2><p>The introduction of the Node.js Module entails knowledge in loading built-in modules, listing and defining core modules, third-party modules (i.e. Express, and Mongoose), and local modules.</p><p>This lesson aims at covering all the different topics listed while answering the question: &quot;Why use Node.js modules at all?&quot;.</p>

Node.js Module Introduction

<h2>What does this lesson cover?</h2><p>Node&#x27;s ability to allow other tasks to proceed immediately instead of having to wait for the completion of certain prior tasks is reliant on the Event Loop.</p><p>This lesson will explain the Event Loop and the exact steps that entail how it works. We&#x27;ll also compare and contrast Events and Callbacks, expand on the concept of Event Loop Ticks, Event Loop Blocking, and Escaping the Event Loop. </p>

Event Loop

<h2>What does this lesson cover?</h2><p>After installing Node and the npm, it&#x27;ll be high time for you to run your first Node.js program.</p><p>In this thorough lesson, we&#x27;ll be taking our first steps with the Command Line Interface (REPL terminal) and learning how to accept arguments from the command line.</p>

Running Node.js

<h2>What does this lesson cover?</h2><p>Node.js objects emit a lot of events. We&#x27;ll be decribing the process of event emitting by incorporating callback function and inheritance.</p><p>Additionally, the lesson covers the EventEmitter class of the events module entails methods that developers will be using quite often when coding Node.js applications. The methods we&#x27;ll refer to specifically are addListener(), removeListener(), removeAllListeners(), listeners(), once(), and emit().</p>

Event Emitter

<h2>What does this lesson cover?</h2><p>The http module is made to support the wide range of Node.js features, hence the usage of the module proves valid for all developers working with Node.js.</p><p>We&#x27;ll be addressing the module&#x27;s key properties with supporting code examples to enforce practice into our learning,</p>

HTTP Module

Lesson Challenge

<h2>What does this lesson cover?</h2><p>URL parsings and resolution is executed with the help of the URL Module.</p><p>This lesson covers implementations of URL properties with the usage of the URL module, we&#x27;ll also be using a lot of new methods (url.format(), url,resolve(), url.href, etc.), and expanding on terms like &quot;parsing&quot; and &quot;resolution&quot;.</p>

URL Module

<h2>What does this lesson cover?</h2><p>The concept of Global Objects is widely popular in programming languages in general, they indicate the core objects that do not require installments.</p><p>In the case of Node.js, Global Objects are a part of JavaScript and can be accessed without additional installments.</p><p>This lesson covers the most-used Global Objects Node.js has to offer along with examples and lesson quizzes.</p>

Globals

<h2>What does this lesson cover?</h2><p>The Node.js library has a wide range of utility modules available that have access to distinct utility functions.</p><p>They are the OS Module, the Path Module, the Net Module, the DNS Module, and the Domain Module. </p><p>This lesson will uncover the usage and structure of the said modules along with the reasoning behind their individual usage in Node.js applications.</p>

Utility Modules

<h2>What does this lesson cover?</h2><p>We&#x27;ll be diving into the main characteristics of Node.js: Processes (The Process Object).</p><p>This lesson will expand on defining the Process object with a thorough definition and initiation in code.</p><p>Furthermore, we&#x27;ll get into the specifics of Processes such as Process Properties, Process Functions/Methods, Child Processes and how to create them, The Spawn Method, etc.</p>

Processes

<h2>What does this lesson cover?</h2><p>The Callback function is the secret behind Node&#x27;s scalable and non-blocking architecture.</p><p>This lesson will go into depth on the function and all its supporting methods including their benefits and how they work into all Node.js applications, ensuring their non-blocking nature in a couple of steps.</p>

Callbacks

Node.js Environment: Introduction

<p>There are two ways to set up a Node.js environment, <strong>locally</strong> and/or <strong>online</strong>. Both environments have their merits and demerits. I.e. an online setup of Node is easier to manage while a Local environment consists of local build automation, etc. If the developer is willing to set up an online Node.js environment, a quick google search that will offer equivalent options will be presented and it will all come down to the developer’s preference. </p>

<p>However, if the developer sides with a local approach, then preference is taken off the table and replaced with protocol-<slot> a step-by-step guide that includes software availability and OS architecture</slot>.</p>

Select Correct Answer

Local Environment Setup

<p><strong>A Local Environment Setup </strong>(aka setting up a Node.js development environment on your computer) requires the availability of an <slot>Editor, a Runtime Environment for Node.js, and additional software</slot>.</p>

<h2><strong>An Editor (IDE)</strong></h2>

<p>Installing an editor offers features such as <strong>syntax highlighters</strong>, <strong>debugging</strong> <strong>software</strong>, <strong>smart code completion</strong>, and more. Additionally, the files you develop with an editor are source files (the names typically contain .js in the name) and hold program source code.</p>

<p>Visual Studio Code by Microsoft, IntelliJ IDEA by JetBrains are popular choices. </p>

<p>Considering installing an NVM is critical for Node.js, <strong>an NVM is a bash script made for managing numerous active Node.js and npm</strong> (Node Package Manager) <strong>versions</strong>.</p>

<h2><strong>Node.js Interpreter</strong></h2>

<p>A Node.js runtime environment is for executing the javascript code designated in the source files.</p>

<p>Note the difference between a Text Editor and a Node Environment.</p>

Installing Node.js: a Step-by-Step Guide

<p>To install a Node.js runtime environment, firstly, enter the Node.js official website which can be easily found by simply searching “nodejs”, or something along the lines of.</p>

<p>Immediately we’ll be given (at first glance) two distinct options either, install the latest stable version of Node.js, aka the <samp><slot>Recommended For Most Users </slot></samp>options which is at the moment version 16.16.0, or the <slot>Latest Version </slot>- 18.7.0.</p>

<p>However if, one prefers to choose a Node.js version based on how compatible it will be with their Hardware and Software, they can find options listed under <slot>“Other Downloads”</slot>, the choices vary anywhere between a Windows 64bit or a 64bit macOS.</p>

<p>The installation process will then commence and after going through the technical setup (i.e. license agreement, destination folder, etc.) you’ll be able to see the Node.js platform on your Explorer. You’ll also find <samp><strong>npm.cmd</strong></samp> files and a “<strong>node-modules</strong>” folder.</p>

<p>Make sure the npm - Node Package Manager and &quot;Add to Path&quot; is checked for installation in the wizard.</p>

Environment setup on Mac OS X

<p>For setting up the Node environment on <strong>Mac OS X</strong>, install the pkg on the official Node website and run it.</p>

<p>You’ll be met with instructions stating where the npm and node will be located, a software liscence agreement, and the ability to select the destination and installation method.</p>

<p>Most of the time, the destination or PATH variable that you’ve selected (or the one set as default) is true, but in case you’re lost, or if its not in the mentioned place, check it in the command line interface, by using the following code. Let’s say the default location is<strong><samp> /usr/bin</samp></strong>.</p>

<p>And that concludes the installation aspect, after that, you may presume to work in the Node environment.</p>

Downloading npm

<p><strong>The Node Package Manager (</strong>npm<strong>) </strong>installs local packages and provides the ability to install public ones. Its installation is crucial for loading Node.js.</p>

<p>If unsure of its installation (it’s mostly accomplished in the process of Node installation) load the following command in the command prompt (it will show the version of installed npm):</p>

<p>If npm is not installed a version manager, nvm, can assist in that department in addition to safe installation, a version manager blocks any potential permission errors when loading global packages.</p>

<p>We’ll be getting into an in-depth explanation of npm in future lessons for further clarification of its functions.</p>

<p>To install the most recent version of npm, load the following in the command line.</p>

<h2>What does this section cover?</h2><p>This section introduces newbies to the absolute fundamentals and basics of Node.js. After defining Node.js and its perks, we&#x27;ll identify Node characteristics such as Event Driven Programming and Architectural Overview.</p><p>Another area we&#x27;ll uncover is concepts of Node that every developer should know, including npm (Node Package Manager), two-way data binding, and other key features/concepts in Node.js.</p>

Get Started

<h2>What does this section cover?</h2><p>This section will guide you to installing and then running your first ever Node.js application.</p><p>The super exciting process does in fact entail a bit of work with environment setup, npm installation, and other intricate things you should shift your attention towards. Luckily, we&#x27;ll show you where to look!</p>

Setup

<h2>What does this section cover?</h2><p>The core of all Node.js applications consists of every single term, concept, module, and method you&#x27;ll find in this section.</p><p>We&#x27;ll introduce you to the HTTP, Node.js, Utility, and URL modules, processes, the callback function, and the console.</p><p>The topics we&#x27;ll be covering are essentials and each brings its own benefits to the Node.js table, hence we&#x27;ll be referring to each topic individually, with supporting code examples and lesson quizzes.</p>

The Core

<h2>What does this lesson cover?</h2><p>The development of a new connection, the reading of a file, and every other move a computer takes are called an Event.</p><p>This section serves as a thorough representation of Events in Node.js, the Event Module, and the EventEmitter global object with the most used properties it offers Node developers.</p><p>The purpose of the Event Module (as we&#x27;ll cover in the section) is to support Node&#x27;s non-block and event-driven programming style. Naturally, we&#x27;ll refer to the concept of event-driven programming as a whole and why Node.js is considered event-driven.</p>