$().each vs $.each vs for loop in jQuery?

Question

I Can\'t understand why it is happening.

I read here that :

The first $.each constitutes a single function

Answer 1

Different approach to your "task" http://jsfiddle.net/ADMnj/17/

But i guess the performance issues are coming from that you dont state selector the in the right matter

#t tr input:checkbox:checked 

VS

#t tr :checkbox:checked 

Tough the right way to check if a checkbox is checked would be to call it like this

#t tr input[checked="checked"]

W3.ORG's selector list see the E[foo]

And last but not least the fastest is also the one with the shortest code which might be the slight performance different you get from 3 lines vs 4 and 5 lines of code but cant prove this fact