Build jQuery UI Draggable - Constrain movement in JavaScript

Description

The following code shows how to build jQuery UI Draggable - Constrain movement.

Example


<!-- Revised from demo code on http://jqueryui.com/ -->
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery UI Draggable - Constrain movement</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" />
<!-- www  .  ja  v a2 s  .c om-->
<style>
.draggable { width: 90px; height: 90px; padding: 0.5em; float: left; margin: 0 10px 10px 0; }
#draggable, #draggable2 { margin-bottom:20px; }
#draggable { cursor: n-resize; }
#draggable2 { cursor: e-resize; }
#containment-wrapper { width: 95%; height:150px; border:2px solid #ccc; padding: 10px; }
h3 { clear: left; }
</style>
<script>
$(function() {
$( "#draggable" ).draggable({ axis: "y" });
$( "#draggable2" ).draggable({ axis: "x" });

$( "#draggable3" ).draggable({ containment: "#containment-wrapper", scroll: false });
$( "#draggable5" ).draggable({ containment: "parent" });
});
</script>
</head>
<body>

<h3>Constrain movement along an axis:</h3>

<div id="draggable" class="draggable ui-widget-content">
<p>I can be dragged only vertically</p>
</div>

<div id="draggable2" class="draggable ui-widget-content">
<p>I can be dragged only horizontally</p>
</div>

<h3>Or to within another DOM element:</h3>
<div id="containment-wrapper">
<div id="draggable3" class="draggable ui-widget-content">
<p>I'm contained within the box</p>
</div>

<div class="draggable ui-widget-content">
<p id="draggable5" class="ui-widget-header">I'm contained within my parent</p>
</div>
</div>

<div class="demo-description">
<p>Constrain the movement of each draggable by defining the boundaries of the draggable area. Set the <code>axis</code> option to limit the draggable's path to the x- or y-axis, or use the <code>containment</code> option to specify a parent DOM element or a jQuery selector, like 'document.'</p>
</div>
</body>
</html>

Click to view the demo

The code above generates the following result.

Build jQuery UI Draggable - Constrain movement in JavaScript

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