Gain insights into Node.js, its components, and build patterns. Explore APIs, create modules, and build a REST API using Express. Discover authentication with Passport.js and JSON web tokens.

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 how closures work.

# Closures

JavaScript functions have **lexical** scopes. The accessibility of the variable to a function depends on where that variable is declared within the code, hence the term “lexical.”

A function that’s nested inside another function has access to variables declared in its local scope, the outer function’s scope, and the global scope. The nested function is called a **closure**.

Let’s see what we get after running the provided code:


JavaScript Closures

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 Closures

Closures