Difference between ways of selecting descendants

Question

With the risk of being redirected to a dublicate question, what is the difference between using $("ul li") and $("ul").find("li")?

Answer 1

$("ul").find("li") is faster than $("ul li").

$("ul li") is going to be changed into $("ul").find("li") after some checks and breaking.

find() appeared faster than children() to me in single level selections.

Answer 2

You may find this similar question of interest: What is the fastest method for selecting descendant elements in jQuery?

If you only need first level children, using .children() will give you a performance boost since there is less to interrogate.