The Joy of JavaScript by Luis Atencio

Author:Luis Atencio [Atencio, Luis]
Language: eng
Format: epub, pdf
Publisher: Manning Publications Co.
Published: 2021-02-28T23:00:00+00:00

6.2 Module patterns

We have multiple ways to approach modularity in JavaScript even without module specifications. Before JavaScript had any module system, all the code lived in the global space, which proved to be exceptionally hard to maintain. Code was separated into different script files. Developers had to get creative to organize their code and provide some means of abstraction over global data to create scopes that avoid name clashes with other running scripts—and to try to make it back home for dinner every day. JavaScript’s fundamental scoping mechanism has always been and will always be function scope, so it made complete sense to rely on functions to create isolated scopes of code where you could encapsulate data and behavior.

In this section, we’ll review some of the ad hoc modular programming patterns that arose out of sheer necessity before modules became a core part of the language:

Object namespaces

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