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)

Promises in Asynchronous Programming

In the previous two chapters, we looked at many important concepts of asynchronous programming in Node. This chapter is about promises. Promises are available in JavaScript since ES6. Although they have been around in third-party libraries for quite some time, they finally made their way into the core JavaScript language, which is great because they're a really fantastic feature.

In this chapter, we'll learn about how promises work, we'll start to understand exactly why they're useful, and why they've even come to exist inside JavaScript. We'll take a look at a library called axios that supports promises. This will let us simplify our code, creating our promise calls easily. We'll actually rebuild an entire weather app in the last section.

Specifically, we'll look into following topics:

  • Introduction...