December 2014
Intermediate to advanced
424 pages
13h 26m
English
Content preview from Node.js in PracticeBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 4. Events: Mastering EventEmitter and beyond
This chapter covers
- Using Node’s EventEmitter module
- Managing errors
- How third-party modules use EventEmitter
- How to use domains with events
- Alternatives to EventEmitter
Node’s events module currently includes just a single class: EventEmitter. This class is used throughout both Node’s built-in modules and third-party modules. It contributes to the overall architecture of many Node programs. Therefore it’s important to understand EventEmitter and how to use it.
It’s a simple class, and if you’re familiar with DOM or jQuery events, then you shouldn’t have much trouble understanding it. The major consideration when using Node is in error handling, and we’ll look at this in technique ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.