October 2019
Intermediate to advanced
1200 pages
31h 31m
English
Content preview from Professional JavaScript for Web Developers, 4th Edition
Become 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,
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.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.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.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.
26Modules
WHAT'S IN THIS CHAPTER?
- Understanding the module pattern
- Improvising module systems
- Working with pre-ES6 module loaders
- Working with ES6 modules
WROX.COM DOWNLOADS FOR THIS CHAPTER
Please note that all the code examples for this chapter are available as a part of this chapter's code download on the book's website at www.wrox.com/go/projavascript4e on the Download Code tab.
Writing modern JavaScript essentially guarantees that you will be working with large codebases and using third-party resources. A consequence of these is that you will end up using code broken into different parts and connecting them together in some way.
Prior to the ECMAScript 6 module specification, there was a dire need for module-like behavior even though browsers did not natively support it. ECMAScript did not support modules in any way, so libraries and codebases that wanted to use the module pattern were required to cleverly use JavaScript constructs and lexical features to “fake” module-like behavior.
Because JavaScript is an asynchronously loaded interpreted language, the module implementations that emerged and gained widespread use took on a handful of different forms. These different forms took their shape in order to accomplish different results, but ultimately, they were all implementations of the canonical module pattern.
UNDERSTANDING THE MODULE PATTERN
Splitting code into independent pieces and connecting those pieces together can be robustly implemented with the module ...
Become 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,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.