JavaScript is a language that allows you to do complex things on a web page - whenever there is something more going on on a web page than just displaying it statically - displaying periodically updated content, or interactive maps, or animating 2D/3D graphics, or scrolling the video in the player, etc. — you can be sure that, most likely, JavaScript could not have happened.

Interesting analogy! JavaScript's capabilities are indeed remarkable, just like how it's hard to imagine web pages without it. Its ability to bring interactivity and dynamic content has revolutionized the web.