May 2018
Intermediate to advanced
492 pages
12h 3m
English
Content preview from Node.js Web Development - Fourth Edition
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CommonJS/Node.js module format
We've already seen a couple of examples of this module format, with the simple.js example, and the programs we examined in Chapter 2, Setting up Node.js. So let's take a closer look.
CommonJS modules are stored in files with the extension .js.
Loading a CommonJS module is a synchronous operation. That means that when the require('modulename') function call returns, the module has been located and completely read into memory and is ready to go. The module is cached in memory so that subsequent require('modulename') calls return immediately, and all return the exact same object.
Node.js modules provide a simple encapsulation mechanism to hide implementation details while exposing an API. Modules are treated as ...
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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.