Apply array data to Ext.Panel
<html> <head> <title>Hello World Window</title> <link rel="stylesheet" type="text/css" href="ext-3.0.0/resources/css/ext-all.css" /> <script type="text/javascript" src="ext-3.0.0/adapter/ext/ext-base.js"></script> <script type="text/javascript" src="ext-3.0.0/ext-all.js"></script> </head> <script type="text/javascript"> Ext.onReady(function(){ var cls = "myclass"; var member = { firstName: 'A', lastName: 'B' }; var pnl = new Ext.Panel({ applyTo: 'mainContent', width: 200, height: 100, bodyStyle: 'padding:5px', title: 'title', html: String.format('<div class=\'{0}\'>{2}, {1}</div>', cls, member.firstName, member.lastName) }); }); </script> <body> <div id="mainContent"> </div> </body> </html>