jqueryui sortable テスト マウスドラッグで並び替えの順番を変える jquery

<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width initial-scale=1">
<title>jQuery UI Sortable - Default functionality</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link rel="stylesheet" href="/resources/demos/style.css">
<style>
#sortable { list-style-type: none; margin: 0; padding: 0; width: 500px; }
// #sortable li { margin: 0 3px 3px 3px; padding: 0.4em; padding-left: 1.5em; font-size: 1.4em; height: 18px; }
// #sortable li span { position: absolute; margin-left: -1.3em; }
#sortable li { height:20px; }
.numid { height:20px; margin: 0px 0px 0px 0px; padding: 0px 0px 0px 0px; }

.x-y {
border: solid 0px orange;
background: lemonchiffon;
width: 360px;
margin-top: 0;
margin-bottom: 0;
margin-left: auto;
margin-right: auto;
overflow-x: auto;
overflow-y: hidden;
}

</style>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script>
$( function() {
$( "#sortable" ).sortable();
$( "#sortable" ).disableSelection();
} );
</script>
</head>
<body>





ポイントは 並び順の番号は、id="sortable" の外がわに記載すること。そうでないと
ドラッグすると全部うごいてしまう。
<table >
<tr >
<td style="vertical-align:top;">
<div class="numid">1</div>
<div class="numid">2</div>
<div class="numid">3</div>
<div class="numid">4</div>
<div class="numid">5</div>
<div class="numid">6</div>
<div class="numid">7</div>
</td>
<td>
<ul id="sortable" class="x-y" style="white-space: nowrap;">
<li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 1あああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああああ</li>
<li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 2</li>
<li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 3</li>
<li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 4</li>
<li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 5</li>
<li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 6</li>
<li class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 7</li>
</ul>
</td>
</tr>
</table>






</body>
</html>