Should I cache $(this) in jQuery if it is used more than once?

Question

I know that you are supposed to cache the results of a selector if you use it more than once. An example would be:

var $selected = $(\'.some-selected-elemen         


        

Answer 1

jsperf.com is a great resource - and one I've taken to frequenting of late - for evaluating JavaScript performance. For example, the following test evaluates the performance of cached jQuery elements to that of non-cached:

http://jsperf.com/jquery-cache-vs-no-cache

The results echo the answers in this thread.