Yes, but why drag in 30k of additional library unnecessarily?
Yes use jQuery if it's really providing benefit, but if you're only using it for a few things, you may be better off just doing in in plain javascript, even if it's a bit longer.
Every library you add has an overhead cost on the end user as they have to fetch it and process it. It's easy to lose track of that when you're developing and testing against local webservers or on computers vs mobile, but there is strong value in keeping things small and with as few unnecessary dependencies as possible :)
