Grab click event of a checkbox added with prepend

Hi

I have added a checkbox with the prepend method to an editir form. what is the correct syntax for grabing the click event. Tried these but they won't work:

         $('input:checkbox').on('click', function () {
             alert('aaa');
         });

        $("#chkDoNotInsertDistributorPOSCommission").click(function () {
             alert('aaa');
        })

I tried looking on the forum but couldn't find anything. Thanks.