jQuery object: to cache or not to cache?

Question

I have some trouble that comes from my Javascript (JS) codes, since I sometimes need to access the same DOM elements more than once in the same function. Some reasoning is a

Answer 1

The second is superior. Most importantly, it is cleaner. In the future, if you want to change your selector, you only need to change it one place. Else you need to change it in N places.

Secondly, it should perform better, although a user would only notice for particularly heavy dom, or if you were invoking that function a lot.