Book Image

Professional JavaScript

By : Hugo Di Francesco, Siyuan Gao, Vinicius Isola, Philip Kirkbride
Book Image

Professional JavaScript

By: Hugo Di Francesco, Siyuan Gao, Vinicius Isola, Philip Kirkbride

Overview of this book

In depth knowledge of JavaScript makes it easier to learn a variety of other frameworks, including React, Angular, and related tools and libraries. This book is designed to help you cover the core JavaScript concepts you need to build modern applications. You'll start by learning how to represent an HTML document in the Document Object Model (DOM). Then, you'll combine your knowledge of the DOM and Node.js to create a web scraper for practical situations. As you read through further lessons, you'll create a Node.js-based RESTful API using the Express library for Node.js. You'll also understand how modular designs can be used for better reusability and collaboration with multiple developers on a single project. Later lessons will guide you through building unit tests, which ensure that the core functionality of your program is not affected over time. The book will also demonstrate how constructors, async/await, and events can load your applications quickly and efficiently. Finally, you'll gain useful insights into functional programming concepts such as immutability, pure functions, and higher-order functions. By the end of this book, you'll have the skills you need to tackle any real-world JavaScript development problem using a modern JavaScript approach, both for the client and server sides.
Table of Contents (12 chapters)

Node Version Manager (nvm)

Node.js and JavaScript have a huge community and a very fast-paced development cycle. Because of this rapid development and its release cycles, it is very easy to become out of date (check Node.js's previous releases page for more information:

Can you imagine working on a project that uses Node.js and is a few years old? By the time you come back to fix a bug, you will notice that the version you have installed can't run the code anymore because of some compatibility issues. Or, you will find that you can't change the code using your current version since what is running in production is a couple of years old and doesn't have async/await or some other lifesaving feature you use a lot in the most recent version.

That issue happens with all programming languages and development environments, but in Node.js, this is prominent because of the extremely fast release cycles.

To solve this, it...