As a programming language, JavaScript does has a few quirks here and there, but what truly sets it apart is the central role it plays in the creation of web pages and applications. As such, understanding JavaScript has more to do with understanding its contribution to the Web, and the numerous evolutions it has undergone, than mastering its syntax and internal logic. This presentation gives an overview of the more prominent trends that have appeared over the years, and aims to showcase what programming in JavaScript can actually look like, depending on your needs.