> Great if you know it, but is it worth learning if you don't? The main thing with a lot of these small web libraries (I'd consider JQuery a library) is that t

> Great if you know it, but is it worth learning if you don't? The main thing with a lot of these small web libraries (I'd consider JQuery a library) is that they are incredibly easy to learn. You can be productive with JQuery within an afternoon. You can be productive with React within a weekend or two. These are not Java frameworks with Hibernate, XML configuration, database drivers, migration paths, etc etc. You pick one up, do what you need to do, and forget it within a week if you so desire. That said, if you use JQuery in 2020, with a new project, the vast majority of frontend devs I know would consider that a serious code smell (as in, you don't know JS and that's the reason you have to result to JQuery). Check [1] for some info about vanilla JS. [1] http://youmightnotneedjquery.com/ http://youmightnotneedjquery.com/