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Build jQuery UI Droppable - Revert draggable position in JavaScript

Description

The following code shows how to build jQuery UI Droppable - Revert draggable position.

Example


<!-- Revised from demo code on http://jqueryui.com/ -->
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery UI Droppable - Revert draggable position</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" />
<!--from   www. j  a v a  2  s  . c  o  m-->
<style>
#draggable, #draggable2 { width: 100px; height: 100px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
#droppable { width: 150px; height: 150px; padding: 0.5em; float: left; margin: 10px; }
</style>
<script>
$(function() {
$( "#draggable" ).draggable({ revert: "valid" });
$( "#draggable2" ).draggable({ revert: "invalid" });

$( "#droppable" ).droppable({
activeClass: "ui-state-default",
hoverClass: "ui-state-hover",
drop: function( event, ui ) {
$( this )
.addClass( "ui-state-highlight" )
.find( "p" )
.html( "Dropped!" );
}
});
});
</script>
</head>
<body>

<div id="draggable" class="ui-widget-content">
<p>I revert when I'm dropped</p>
</div>

<div id="draggable2" class="ui-widget-content">
<p>I revert when I'm not dropped</p>
</div>

<div id="droppable" class="ui-widget-header">
<p>Drop me here</p>
</div>

<div class="demo-description">
<p>Return the draggable (or it's helper) to its original location when dragging stops with the boolean <code>revert</code> option set on the draggable.</p>
</div>
</body>
</html>

Click to view the demo

The code above generates the following result.

Build jQuery UI Droppable - Revert draggable position in JavaScript
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