Jquery ui-sortable - unable to drop tr in empty tbody

Question

I have two connected tbody elements allowing me to drag rows between two tables. Everything works fine until all rows are removed from either table.

When all rows have

Answer 1

i use:

$(document).ready(function(){
      $( "#sortable1 tbody, #sortable2 tbody" ).sortable({
      connectWith: ".connectedSortable",
      remove: function(event, ui){ if($(this).html().replace(/^\s+/, "") == '') { $(this).html(' '); }},
      update: function( event, ui ) {$(this).find('.tmp_tr').remove();},
    }).disableSelection();

});