<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>jQuery UI Resizable - Preserve aspect ratio</title> <link rel="stylesheet" href="../../themes/base/all.css"> <link rel="stylesheet" href="../demos.css"> <style> #resizable { width: 160px; height: 90px; padding: 0.5em; } #resizable h3 { text-align: center; margin: 0; } </style> <script src="../../external/requirejs/require.js"></script> <script src="../bootstrap.js"> $( "#resizable" ).resizable({ aspectRatio: 16 / 9 }); </script> </head> <body> <div id="resizable" class="ui-widget-content"> <h3 class="ui-widget-header">Preserve aspect ratio</h3> </div> <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> </body> </html>