Book Image

Learning Node.js Development

By : Andrew Mead
Book Image

Learning Node.js Development

By: Andrew Mead

Overview of this book

Learning Node.js Development is a practical, project-based book that provides you with all you need to get started as a Node.js developer. Node is a ubiquitous technology on the modern web, and an essential part of any web developers' toolkit. If you are looking to create real-world Node applications, or you want to switch careers or launch a side project to generate some extra income, then you're in the right place. This book has been written around a single goal—turning you into a professional Node developer capable of developing, testing, and deploying real-world production applications. Learning Node.js Development is built from the ground up around the latest version of Node.js (version 9.x.x). You'll be learning all the cutting-edge features available only in the latest software versions. This book cuts through the mass of information available around Node and delivers the essential skills that you need to become a Node developer. It takes you through creating complete apps and understanding how to build, deploy, and test your own Node apps. It maps out everything in a comprehensive, easy-to-follow package designed to get you up and running quickly.
Table of Contents (13 chapters)

The basic concept of asynchronous program

In this section, we're going to create our first asynchronous non-blocking program. This means our app will continue to run while it waits for something else to happen. In this section, we'll look at a basic example; however, in the chapter, we'll be building out a weather app that communicates with third-party APIs, such as the Google API and a weather API. We'll need to use asynchronous code to fetch data from these sources.

For this, all we need to do is make a new folder on the desktop for this chapter. I'll navigate onto my desktop and use mkdir to make a new directory, and I'll call this one weather-app. All I need to do is navigate into the weather app:

Now, I'll use the clear command to clear the Terminal output.

Now, we can open up that new weather app directory inside of Atom:

This is the...