Of course you do. Or you should.
JavaScript is more popular than ever for all aspects of web development, including in WordPress. Eventually, JavaScript could make up most of the codebase. If you want to stay on your game with WordPress, you need to get on your game with JavaScript.
Someone I can only call Vincent O (last name is a mystery, unless it is truly O, in which it is just amazing) went on a deep dive mission learning JavaScript to go from being a freelancer that, “just knocked out websites using WordPress,” to having a full time JavaScript-based job.
His guide shows how he read specific books, took specific courses, and watched specific videos to learn what he did. Basically, he’s saving you the time of figuring out what to use to learn, which should save you a lot of time.
