jQuery selector - what is faster?

Question

$('#content td#foo').show(); $('td#foo').show();

The td is somewhere deep in the content div.

What is faster?

Answer 1

You can simply write

$("#foo").show();

You cannot have more than 1 elements with the same id. So no need to use any additional selector to get an element with a particular id. So your td tag selector can be avoided.