Book Image

Advanced Node.js Development

By : Andrew Mead
Book Image

Advanced Node.js Development

By: Andrew Mead

Overview of this book

Advanced Node.js Development is a practical, project-based book that provides you with all you need to progress as a Node.js developer. Node is a ubiquitous technology on the modern web, and an essential part of any web developer’s toolkit. If you're 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 was written around a single goal: turning you into a professional Node developer capable of developing, testing, and deploying real-world production applications. There's no better time to dive in. According to the 2018 Stack Overflow Survey, Node is in the top ten for back-end popularity and back-end salary. This book 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 delivers advanced skills that you need to become a professional Node developer. Along this journey you'll create your own API, you'll build a full real-time web app and create projects that apply the latest Async and Await technologies. Andrew Mead maps everything out for you in this book so that you can learn how to build powerful Node.js projects in a comprehensive, easy-to-follow package designed to get you up and running quickly.
Table of Contents (17 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Printing message timestamps


In this section, you're going to be formatting your timestamps, and you're going to be displaying them to the screen along with the chat message. Currently, we show who it's from and the text, but the createdAt timestamp is not used anywhere.

Now the first thing we need to figure out is how we can take that timestamp and get a Moment object back, because at the end of the day we want to call the format method to format it as we like. In order to do that, all you have to do is take your timestamp. We'll make a variable called createdAt to represent that value, and pass it in as the first argument to moment, which means I simply pass in createdAt, just like this:

var createdAt = 1234; 
var date = moment(createdAt); 

When I do this, we're creating a moment with the same methods like format, add, and subtract, but it's representing a different point in time. By default, it uses the current time. If you pass in a timestamp, it uses that time. Now this number, 1234, is...