Set transparency of a DIV and its contents using jQuery

Question

What is the best way to set the transparency of a HTML DIV element and its contents using jQuery?

Answer 1

As theIV said you can use the css method, but as an alternative you can use animate:

$('#my_element').animate({ opacity: 0.5 }, 100);

this will animate the opacity of you div (and its contents) to 0.5 (from whatever it was to begin with) in 100 milliseconds.