Mix two classes
<html> <head> <script type="text/javascript"> var djConfig = { baseScriptUri : "js/dojo/" }; </script> <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script> <script language="JavaScript" type="text/javascript"> function FirstName() { this.firstName = "A"; } function LastName() { this.lastName = "B"; } var o = dojo.mixin(new FirstName(), new LastName()); alert(dojo.toJson(o)); </script> </head> <body></body> </html>