Born as a simple way to manipulate documents in the browser, over the years it became the most popular programming language in the world, and now runs everywhere.
First, dive into the introductory guide to the language, and dive into the overview of the “latest and greatest” additions to the language. It’s useless to learn the “old way” of doing things when in the last 3 years how we all use the language changed so much.
Basics of the language
Some more advanced topics before you go ahead to learn something new
The Web Platform
Cookies, localStorage, the History API, Fetch, Cache, Service Workers, it’s all explained in the Web Platform APIs Guide. Lots of things in there!