# SortableJS http://www.sortablejs.com/index.html ~~~ new Sortable(document.querySelector('#menu_sort'),{ animation:150, handle: ".pre-menu-item", // 结束拖动事件 onEnd: (e) => { that.btn_list = [] $('#menu_sort>li').each((index, item) => { let res = $(item).data('item') that.btn_list.push(res) that.key += 1; }) that.initSortTable() }, }) ~~~