Ext.js Ext.container.Viewport Container

Ext.js Ext.container.Viewport Container

<!DOCTYPE html>
<html>
   <head>
      <link href = "https://cdnjs.cloudflare.com/ajax/libs/extjs/6.0.0/classic/theme-classic/resources/theme-classic-all.css"
         rel = "stylesheet" />
      <script type = "text/javascript"
         src = "https://cdnjs.cloudflare.com/ajax/libs/extjs/6.0.0/ext-all.js"></script>

      <script type = "text/javascript">
         Ext.onReady(function () {
            var childPanel1 = Ext.create('Ext.panel.Panel', {
               title: 'Child Panel 1',
               html: 'A Panel'
            });
            var childPanel2 = Ext.create('Ext.panel.Panel', {
               title: 'Child Panel 2',
               html: 'Another Panel'
            });
            Ext.create('Ext.container.Viewport', {
               renderTo: Ext.getBody(),
               items: [ childPanel1, childPanel2 ]
            });
         });
      </script>
   </head>

   <body>
   </body>
</html>