It's really a great piece of engineering -- it a technical building block that is very well designed and solves a great number of problems. Some of the things t

It's really a great piece of engineering -- it a technical building block that is very well designed and solves a great number of problems. Some of the things that came later put development on a new level, but this doesn't take anything away from jQuery for the time it was made. Resig's book is in a large part "how jQuery was made" and it was a great read. Also some of the built in APIs that mimicked it like querySelector are not as elegant as jQuery, even though it was a solved problem at that point.