The DOM and native browser API's have improved by leaps and bounds since jQuery's release all the way back in 2006. People have been writing "You Might Not Need jQuery" articles since 2013 (see this classic site and this classic repo). I don't want to rehash old territory, but a good bit has changed in browser land since the last You Might Not Need jQuery article you might have stumbled upon. Browsers continue to implement new APIs that take the pain away from library-free development, many of them directly copied from jQuery.
Let's go through some new vanilla alternatives to jQuery methods.