<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Validate DateBox - jQuery EasyUI Demo</title> <link rel="stylesheet" type="text/css" href="../../themes/default/easyui.css"> <link rel="stylesheet" type="text/css" href="../../themes/icon.css"> <link rel="stylesheet" type="text/css" href="../demo.css"> <script type="text/javascript" src="../../jquery.min.js"></script> <script type="text/javascript" src="../../jquery.easyui.min.js"></script> </head> <body> <h2>Validate DateBox</h2> <p>When the selected date is greater than specified date. The field validator will raise an error.</p> <div style="margin:20px 0;"></div> <input class="easyui-datebox" required data-options="validType:'md[\'10/11/2012\']'"></input> <script> $.extend($.fn.validatebox.defaults.rules, { md: { validator: function(value, param){ var d1 = $.fn.datebox.defaults.parser(param[0]); var d2 = $.fn.datebox.defaults.parser(value); return d2<=d1; }, message: 'The date must be less than or equals to {0}.' } }) </script> </body> </html>