To JQuery or not?

Recently I was building a mobile site where I was being very critical of load time. Everything was evaluated for the sake of fast load time.  I only needed a few specific things from the Javascript so I thought hard about whether to use JQuery or not.  The library is only 32KB but that was a lot considering some of the other fine tuning I did to the site. (Plus, the mobile framework adds a lot to this)  I determined it was best to not use it and wrote my own custom code to deal with the needed functions.

It worked great and made for a super fast load time.  My advice is to not rely on JQuery too heavily and really determine if you can do it with just plain Javascript first.  The less HTTP requests the better.