jQuery UI Resizable - Preserve aspect ratio : UI Resizable « jQuery « JavaScript Tutorial
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- UI Resizable
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<!doctype html>
<html lang="en">
<head>
<title>jQuery UI Resizable - Preserve aspect ratio</title>
<link type="text/css" href="js/themes/base/ui.all.css" rel="stylesheet" />
<script type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script type="text/javascript" src="js/ui/ui.core.js"></script>
<script type="text/javascript" src="js/ui/ui.resizable.js"></script>
<link type="text/css" href="js/demos.css" rel="stylesheet" />
<style type="text/css">
#resizable { width: 160px; height: 90px; padding: 0.5em; }
#resizable h3 { text-align: center; margin: 0; }
</style>
<script type="text/javascript">
$(function() {
$("#resizable").resizable({
aspectRatio: 16/9
});
});
</script>
</head>
<body>
<div class="demo">
<div id="resizable" class="ui-widget-content">
<h3 class="ui-widget-header">Preserve aspect ratio</h3>
</div>
</div><!-- End demo -->
<div class="demo-description">
<p>Maintain the existing aspect ratio or set a new one to constrain the proportions on resize. Set the <code>aspectRatio</code> option to true, and optionally pass in a new ratio (i.e., 4/3)</p>
</div><!-- End demo-description -->
</body>
</html>