I found out that when pasting text (i.e. Hello) by using the mouse, the following function will throw an empty popup:
Hello
$(\'input:text\').onpaste
I don't think the bellow code works on IE8 since the input value is not changed when alert() executed.
$('input').bind('input paste', function(e) { alert($(this).val()); });
on Firefox and Chrome, it works fine.