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    <p>I did a quick experiment based on your code. I am able to drag elements from below and add them to the first sequence. Then they are accessible when the clicky button is clicked.</p> <pre><code> &lt;html&gt; &lt;head&gt; &lt;script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="js/jquery-ui-1.10.3.custom.min.js"&gt;&lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;div id="moo"&gt;clicky&lt;/div&gt; &lt;ul class="sortable connectedSortable ui-sortable"&gt; &lt;h3 data-sequence-title="sequence1"&gt;Sequence 1&lt;/h3&gt; &lt;li data-screen="s1screen1"&gt;Seq 1 Screen 1&lt;/li&gt; &lt;li data-screen="s1screen2"&gt;Seq 1 Screen 2&lt;/li&gt; &lt;li data-screen="s1screen3"&gt;Seq 1 Screen 3&lt;/li&gt; &lt;/ul&gt; &lt;ul class="draggable"&gt; &lt;h3 data-sequence-title="sequence2"&gt;Dragable Sequence (Drag these elements up and assign to sequence 1)&lt;/h3&gt; &lt;li data-screen="s2screen1"&gt;Seq 2 Screen 1&lt;/li&gt; &lt;li data-screen="s2screen2"&gt;Seq 2 Screen 2&lt;/li&gt; &lt;li data-screen="s2screen3"&gt;Seq 2 Screen 3&lt;/li&gt; &lt;/ul&gt; &lt;script&gt; $(document.getElementById('moo')).on('click', function(){ // Build nested array from DOM elements var jsonObj = []; $('.sortable h3').each(function(){ var obj = { title: $(this).data("sequence-title"), Screens: [] }; $(this).siblings("li").each(function() { obj.Screens.push({ image: $(this).data("screen") }); }); jsonObj.push(obj); }); alert(JSON.stringify(jsonObj)); }); // Initialize draggable / droppable functionality $('.sortable').sortable({ placeholder: 'ui-state-highlight', revert: true }); $('.draggable li').draggable({ connectToSortable: '.sortable', helper: 'clone', revert: 'invalid' }); $('.sortable').disableSelection(); &lt;/script&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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