jQuery Event Keypress: Enter key

$(document).on('keypress','#appendedInputButtons',function(e){ alert(e.which);});

<select>
    <option value="1">1</option>
    <option value="2">2</option>
 </select>     

 <script> 
 $('select').live('keypress',function(e){
     var p = e.which;
     if(p==13){
         alert('enter was pressed');
     }
 });
 </script>