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)

JSON

Now that you know how to parse command-line arguments using process.argv and yargs, you've solved the first piece to the puzzle for the notes application. Now, how do we get that unique input from the user? The second piece to the puzzle is to solve how we store this information.

When someone adds a new note, we want to save it somewhere, preferably on the filesystem. So the next time they try to fetch, remove, or read that note, they actually get the note back. To do this, we'll need to introduce something called JSON. If you're already familiar with JSON, you probably know it is super popular. It stands for JavaScript Object Notation, and it's a way to represent JavaScript arrays and objects using a string. Now, why would you ever want to do that?

Well, you might want to do that because strings are just text, and that's pretty much supported anywhere...