Build jQuery UI Sortable - Handle empty lists in JavaScript

Description

The following code shows how to build jQuery UI Sortable - Handle empty lists.

Example


<!-- Revised from demo code on http://jqueryui.com/ -->
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery UI Sortable - Handle empty lists</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.4/jquery-ui.min.js"></script>
<link type="text/css" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.4/themes/smoothness/jquery-ui.css" rel="stylesheet" />
<!--   w ww .  ja v a 2  s  .  co m-->
<style>
#sortable1, #sortable2, #sortable3 { list-style-type: none; margin: 0; padding: 0; float: left; margin-right: 10px; background: #eee; padding: 5px; width: 143px;}
#sortable1 li, #sortable2 li, #sortable3 li { margin: 5px; padding: 5px; font-size: 1.2em; width: 120px; }
</style>
<script>
$(function() {
$( "ul.droptrue" ).sortable({
connectWith: "ul"
});

$( "ul.dropfalse" ).sortable({
connectWith: "ul",
dropOnEmpty: false
});

$( "#sortable1, #sortable2, #sortable3" ).disableSelection();
});
</script>
</head>
<body>

<ul id="sortable1" class='droptrue'>
<li class="ui-state-default">Can be dropped..</li>
<li class="ui-state-default">..on an empty list</li>
<li class="ui-state-default">Item 3</li>
<li class="ui-state-default">Item 4</li>
<li class="ui-state-default">Item 5</li>
</ul>

<ul id="sortable2" class='dropfalse'>
<li class="ui-state-highlight">Cannot be dropped..</li>
<li class="ui-state-highlight">..on an empty list</li>
<li class="ui-state-highlight">Item 3</li>
<li class="ui-state-highlight">Item 4</li>
<li class="ui-state-highlight">Item 5</li>
</ul>

<ul id="sortable3" class='droptrue'>
</ul>

<br style="clear:both">

<div class="demo-description">
<p>
Prevent all items in a list from being dropped into a separate, empty list
using the <code>dropOnEmpty</code> option set to <code>false</code>.  By default,
sortable items can be dropped on empty lists.
</p>
</div>
</body>
</html>

Click to view the demo

The code above generates the following result.

Build jQuery UI Sortable - Handle empty lists in JavaScript

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