Jquery拖拽，拖动排序插件

上github搜jquery-sortable

<!-- jq拖拽排序 -->
<script
    src="${contextPath}/static/excelTable/jquery-sortable/jquery-sortable.js"></script>
<link rel="stylesheet"
    href="${contextPath}/static/excelTable/jquery-sortable/jquery-sortable.css">

<ol class='example' id="example">

   <li>1</li>

　　<li>2</li>

　　<li>3</li>

</ol>