Confused with all the new #ES6#JS syntax? Check out this really sweet cheat sheet which will answer all your questions if you have been living under a rock the past few years. Worth a read.
If you’re still using JQuery in this day and age you really need to stop yourself and ask why. JQuery remains one of the most popular and downloaded JavaScript libraries. The plainJS website shows you how you can get rid of it. All 100K+ of it.