appendTo : String : 'parent'
Defines where the helper that moves with the mouse is being appended to during the drag (for example, to resolve overlap/zIndex issues).
初始:$('.selector').sortable({ appendTo: 'body' });
获取:var appendTo = $('.selector').sortable('option', 'appendTo');
设置:$('.selector').sortable('option', 'appendTo', 'body');
jquery Sortable
参数名 : 参数类型 : 默认值
事件