I know exactly what jQuery is. I’ve used it happily for years on many projects. However it is completely obsolete in 2018 for anyone that does not need to support IE8.
I may be mistaken, but sounds like you are referring to browser compatibility not being a good reason to adopt jQuery anymore.
But like the parent said above, there's more to jQuery than just getting browser compatibility - it's an abstraction for UI concepts that would require writing a ton of low level JS otherwise.
But like the parent said above, there's more to jQuery than just getting browser compatibility - it's an abstraction for UI concepts that would require writing a ton of low level JS otherwise.