Introduction
Available in all evergreen browsers since 2018, ES Modules are a great way to avoid having to run your code through build tools if you don't need to do anything too complex, and don't require a task runner to minify/compress your code.
This site uses ES Modules. They work really, really well.
In this guide, we'll walk through implementing a modular approach to a common JavaScript scenario: mobile menus. We'll cover writing classes, importing and exporting modules, and getting them running in your browser.
If you've been through the Eleventy guide, you'll already have a functioning website with a local development set up ready to go. To make things easier to run in this tutorial, you'll find things much easier if you have done this!