JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://code.jquery.com/ui/jquery-ui-git.css">
<ul id="sortable1" class="connectedSortable">
    <li id="item[]=1" class="ui-state-default">Item 1</li>
    <li id="item[]=2" class="ui-state-default">Item 2</li>
    <li id="item[]=3" class="ui-state-default">Item 3</li>
    <li id="item[]=4" class="ui-state-default">Item 4</li>
    <li id="item[]=5" class="ui-state-default">Item 5</li>
</ul>

<ul id="sortable2" class="connectedSortable">
    <li id="item[]=6" class="ui-state-highlight">Item 6</li>
    <li id="item[]=7" class="ui-state-highlight">Item 7</li>
    <li id="item[]=8" class="ui-state-highlight">Item 8</li>
    <li id="item[]=9" class="ui-state-highlight">Item 9</li>
    <li id="item[]=10" class="ui-state-highlight">Item 10</li>
</ul>


<div id="out" style="clear: both;"></div>

CSS

#sortable1, #sortable2 { list-style-type: none; margin: 0; padding: 0; float: left; margin-right: 10px; }
#sortable1 li, #sortable2 li { margin: 0 5px 5px 5px; padding: 5px; font-size: 1.2em; width: 120px; }

JavaScript

$(function() {
    var lists = $( "#sortable1, #sortable2" ).sortable({
        connectWith: ".connectedSortable",
        update: function() {
            var list = [];
            lists.each(function(){
                $.merge( list, $(this).sortable("toArray"));
            });
            $("#out").text( list.join( "$" ) );
        }
    }).disableSelection();
});