Module Scope
Explore the concept of module scope in JavaScript by understanding how modules encapsulate code and how variables are shared using import and export statements. Learn the difference between global and module scope, and how to properly structure modular code to improve manageability and reusability.
We'll cover the following...
Background
In this lesson, we will start by defining a module and then learn scope in terms of modules.
Introduction
Modules are files of JavaScript code. They usually contain a class or library of functions for a specific task. These modules break our programs down into smaller parts, making it easier to manage. The illustration below outlines how to break a large file of code into modular chunks.
Previously, we assumed that any variable declared outside the functions would be in the global scope and ...