Getting the position of the element in a list when it’s drag/dropped (ui.sortable)

• demo: http://so.lucafilosofi.com/getting-the-position-of-the-element-in-a-list-when-its-drag-dropped-ui-sortable/

SOLUTION:

$(function() {
    $('ul#sortable').sortable({
        start: function(event, ui) {
            var start_pos = ui.item.index();
            ui.item.data('start_pos', start_pos);
        },
        update: function(event, ui) {
            var start_pos = ui.item.data('start_pos');
            var end_pos = ui.item.index();
            alert(start_pos + ' - ' + end_pos);
        }
    });
});

• NOTE: Updated to make use of jQuery data() method under advice of Alconja