通过jquery-ui中的sortable来实现拖拽排序的简单实例

<script src="{sh::PUB}js/jquery-1.10.1.min.js"></script>
<link rel="stylesheet" href="Public/css/jquery-ui.min.css">
<script src="{sh::PUB}js/jquery-ui.min.js"></script>

<tbody class="sortable">
  <tr></tr>
  <tr></tr> 
</tbody>

$(function() {
  $(".sortable").sortable({
    cursor: "move",
    items: "tr", //只是tr可以拖动
    opacity: 0.6, //拖动时，透明度为0.6
    revert: true, //释放时，增加动画
    update: function(event, ui) { //更新排序之后
      var categoryids = $(this).sortable("toArray");
      var $this = $(this);
      $.ajax({
        url: '{sh::U("AgentGoods/ajax","todo=categoryDragsort")}',
        type: 'POST',
        data: 'categoryids=' + categoryids,
        success: function(json) {
          if (json == 1) {
            layer.msg('移动成功', {
              icon: 1
            });
          } else {
            $this.sortable("cancel");
            layer.msg('移动失败', {
              icon: 2
            });
          }
        }
      });
    }
  });
  $(".sortable").disableSelection();
});

$categoryids  = $this->_post('categoryids');
$categoryidsArr = explode(",",$categoryids);
foreach ($categoryidsArr as $k => $v) {
  $data['sort'] = count($categoryidsArr) - $k;
  $data['id']  = $v;
  M('Agentgoods_category')->where(array('id'=>$v))->save($data);
}
exit('1');