Find if a textbox is currently selected

Question

How would I find if a textbox (or textarea) currently is in focus? I don\'t care to know which one it is, I just need to know if one is in focus (has the cursor in it). How

Answer 1

$('#yourTextAreaID:focus'); 

would not work. :) But

$('#yourTextAreaID').focus(function(){
    // do something
});

would excecute the //do something code when the element receives focus.