ExtJs/layout/layout-vbox.html

<!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() {
         Ext.create('Ext.panel.Panel', {
            renderTo : Ext.getBody(),
            layout : {
               type :'vbox', // vbox：此布局允许元素以垂直方式分布。 这是最常用的布局之一。
               align: 'stretch'               
            },
            requires: ['Ext.layout.container.VBox'],
            xtype: 'layout-vertical-box',
            width : 600,
            height :400,
            frame :true,
            items : [{
               title: 'Panel 1',
               html : 'Panel with flex 1',
               margin: '0 0 10 0',
               flex : 1
            },{
               title: 'Panel 2',
               html : 'Panel with flex 2',
               margin: '0 0 10 0',
               flex : 2
            },{
               title: 'Panel 3',
               flex : 2,
               margin: '0 0 10 0',
               html : 'Panel with flex 2'
            },{
               title: 'Panel 4',
               html : 'Panel with flex 1',
               margin: '0 0 10 0',
               flex : 1
            }]
         });
      });
   </script>
</head>
<body>
</body>
</html>