无法对子项进行排序

Question

我正在尝试使用jQuery可排序来对项目进行排序。由于某些原因，我无法对子li进行排序，只有父li可以移动和排序。当我尝试移动子li时，它会与父ul一起移动

​

$( "#list-tree-pages" ).sortable({
  placeholder: "ui-state-highlight",
  items: "> li",
  revert: true
});
$( "#list-tree-pages" ).disableSelection();

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul class="parent-0 ui-sortable" id="list-tree-pages">
  <li class="item-3 has-children"><a href="#" class="drag ui-sortable-handle"><i class="fa fa-bars"></i></a><a href="#">Features</a>
    <ul class="submenu" id="parent-3" style="display: block;">
      <li class="item-10"><a href="#" class="drag ui-sortable-handle"><i class="fa fa-bars"></i></a><a href="#">Features 1</a></li>
      <li class="item-11"><a href="#" class="drag ui-sortable-handle"><i class="fa fa-bars"></i></a><a href="#">Features 2</a></li>
      <li class="item-12"><a href="#" class="drag ui-sortable-handle"><i class="fa fa-bars"></i></a><a href="#">Features 3</a></li>
    </ul>
  </li>
</ul>

​

Answer 1

抱歉，我设法解决了这个问题。它是通过JavaScript参数实现的。我必须删除>

$( "#list-tree-pages" ).sortable({
    placeholder: "ui-state-highlight",
    items: "li",
    revert: true
});
$( "#list-tree-pages" ).disableSelection();