How to upgrade sencha application from Extjs2 to Extjs3?

I am trying to upgrade a sencha application from Extjs2.0 to ExtJS 3, but I am a bit difficult.

I actually developed this application in ExtJS2, but now I need to use the grid panel that is present in Extjs3.

so when i include extjs3 in the current html file, all my application crashes please help ....

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 
    <title>Picker</title>


   <link rel="stylesheet" href="resources\css\sencha-touch.css" type="text/css">
   <link rel="stylesheet" href="resources\css\ext-all-css.css" type="text/css">


    <script type="text/javascript" src="ext-touch.js"></script>
    <script type="text/javascript" src="ext-all.js"></script>       

     <script type="text/javascript" src="src\Stocking.js"></script>
      <script type="text/javascript" src="src\Datafile.js"></script>
     <script type="text/javascript" src="src\index.js"></script>
    <style>
        body {
            background-color: #286999;
            margin: 0;
            padding: 0;
        }
    </style>
</head>
<body></body>
</html>
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2 answers
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Sencha Touch Ext JS ? Ext JS GridPanel ... , , .

, FYI, Ext JS 3 ( - 3.3). , Ext 4 - . , 3.x, .

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Source: https://habr.com/ru/post/1775206/


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