Learn Node.js fundamentals, build modules, REST APIs, and applications using Express, Passport.js, and Socket.IO.

docker.tar.gz

Chapter 1

Chapter 2 Chapter 3.1

Chapter 3.2

Chapter 4.1

Chapter 3.3

Chapter 4.2-Postman

Chapter 5-Postman

Chapter 6.1

Chapter 2-Exercise

Chapter 4.2-Postman-copy

Chapter 5-Postman-copy

Built on Chrome’s V8 JavaScript engine, Node.js is a runtime environment that enables JavaScript to run outside the browser. This course will help you learn the fundamentals of Node.js to build portable applications.

You’ll learn about the components and build patterns of Node.js. You’ll also explore the API to learn how to create modules and write code to unique data files. Moreover, you’ll delve into the features and practices of JavaScript and build a REST API using the Express framework from scratch. This will set up authentication tokens with Passport.js and JSON web tokens, and finally build a live trivia game with Socket.IO.

By the end of this course, you’ll be equipped with the extensive knowledge to build rich and comprehensive Node.js applications running on the server with JavaScript.

Learn Node.js from Scratch

By the end of this lesson, we'll be able to understand the differences between `var`, `let`, and `const` and how to use them correctly.

In JavaScript, variables can be declared with `var`, `let`, or `const`.

> **Note:** The  `let` and `const` keywords were introduced in ES6 and are the preferred variable declaration methods for this course.

## Variable update

The `var` variables can be updated and redeclared within its scope.

Let’s take a look at the code below. What will be logged to the console? Why?

By the end of this lesson, we'll be able to understand the differences between `var`, `let`, and `const` and how to use them correctly.

In JavaScript, variables can be declared with `var`, `let`, or `const`.

> **Note:** The  `let` and `const` keywords were introduced in ES6 and are the preferred variable declaration methods for this course.

# Variable update

The `var` variables can be updated and redeclared within its scope.

Let’s take a look at the code below. What will be logged to the console? Why?

Learn about the different types of variables in JavaScript.

Before We Begin

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

Wrap Up!

Appendix

JavaScript Variables

Variable update