案例:Extjs案例     状态:可编辑再运行    进入竖版
 运行结果 
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<!DOCTYPE html>
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<html>
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<head>
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   <link href="//cdn.bootcss.com/extjs/6.2.0/classic/theme-classic/resources/theme-classic-all.css" rel="stylesheet" />
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   <script type="text/javascript" src="//cdn.bootcss.com/extjs/6.2.0/ext-all.js"></script>
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   <script type="text/javascript" src="//cdn.bootcss.com/extjs/6.2.0/packages/charts/classic/charts.js"></script></script>
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   <script type="text/javascript">
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      Ext.onReady(function() {
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         Ext.create({
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            xtype: 'draw', 
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            renderTo: Ext.getBody(),
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            width: 600,
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            height: 200,
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            sprites: [{
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               type: 'ellipse',
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               cx: 100,
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               cy: 100,
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               rx: 80,
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               ry: 50,
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               fillStyle: '#1F6D91'
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            }]
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         });
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      });
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   </script>
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</head>
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<body>
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</body>
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</html>