Intro to JavaScript

These docs will assume you've used JavaScript before, and are familiar with how it works. This section has some brief guides on some of the more important (and perhaps newer) pieces of JavaScript you'll need to know in order to be productive with Web Components.

If you're new to JavaScript or haven't used JavaScript for a long time, it's worth reading through MDN's Introduction to JavaScript and MDN's JavaScript Language Overview. It'll cover concepts that this guide won't go into.