JS will be far more versatile if you learn it well. It's in so many dang things.

The biggest annoyances about JS are some things that exist in Python, so you'll already be familiar with loosely typed systems and mutatable objects (dictionaries/hashes or what ever Python calls 'em).

Other than that, it's mostly that there are a million ways to get the same things done, even something like, "define a class with static and instance-bound functions and properties". Older JS techniques only use scope and the prototype and look like a gross hack. Modern JS has actual class syntax.

It all stems from the constant enhancement of the language. Many, many nice features like proper class syntax and first class modules (no more third party module syntax) came in ES2015, and a sadly small number of front end devs to this day really know them well.

Many web dev tutorials use older style techniques just because they've been around ages. If you learn how the new features are mostly syntax sugar on old styles, you'll be a JS pro in no time.