jQeruy Nested Sortable

by ashishsingh

HTML

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>jQuery UI Sortable - Include / exclude items</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>
  #sortable1, #sortable2 { list-style-type: none; margin: 0; padding: 0; zoom: 1; }
  #sortable1 li, #sortable2 li { margin: 0 5px 5px 5px; padding: 3px; width: 90%; }
  </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() {
    $( "#sortable1" ).sortable({
      items: "> li:not(.ui-state-disabled)"
    });
 
    $( ".sortable" ).sortable({
      cancel: ".ui-state-disabled"
    });
 
    $( "#sortable1 li, #sortable2 li, #sortable3 li" ).disableSelection();
  } );
  </script>
</head>
<body>
 
<h3 class="docs">Specify which items are sortable:</h3>
 
<ul id="sortable1">
  <li class="ui-state-default">Item 1</li>
  <li class="ui-state-default ui-state-disabled">(I'm not sortable or a drop target)</li>
  <li class="ui-state-default ui-state-disabled">(I'm not sortable or a drop target)</li>
  <li class="ui-state-default">
  <div>
      <ul id="sortable3" class="sortable">
      <li class="ui-state-default">Item 1</li>
      <li class="ui-state-default">(I'm not sortable or a drop target)</li>
      <li class="ui-state-default">(I'm not sortable or a drop target)</li>
      <li class="ui-state-default">Item 4</li>
    </ul>
    </div>
  </li>
  <li class="ui-state-default">Item 4</li>
</ul>
 
<h3 class="docs">Cancel sorting (but keep as drop targets):</h3>
 
<ul id="sortable2" class="sortable">
  <li class="ui-state-default">Item 1</li>
  <li class="ui-state-default ui-state-disabled">(I'm not sortable)</li>
  <li class="ui-state-default ui-state-disabled">(I'm not sortable)</li>
  <li...