how to update my sencha app from Extjs2 to Extjs3?_问答_开发者

how to update my sencha app from Extjs2 to Extjs3?

开发者 https://www.devze.com 2023-01-25 22:08 出处：网络

i\'m trying to update my sencha app from Extjs2.0 to ExtJS 3, but i\'m finding a bit difficulty in it.

i'm trying to update my sencha app from Extjs2.0 to ExtJS 3, but i'm finding a bit difficulty in it.

actually i developed that application in ExtJS2 but now i have to use the grid panel which is present in Extjs3.

so when i include the extjs3 in the current html file my whole app 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"></scrip开发者_运维知识库t>
    <style>
        body {
            background-color: #286999;
            margin: 0;
            padding: 0;
        }
    </style>
</head>
<body></body>
</html>

You should look at the Official Sencha migration guide first. From there, you should identify specific parts of your application that are breaking. If it is a layout issue, start commenting out individual panels one at a time to find the problem. Once you've identified the panel with the layout issue, start commenting out individual widgets that might be causing the issue.

You should also take advantage of your debugging tools such as Firebug. Use the call stack navigator. You may be able to use it to locate the specific control with the problem.

EDIT: official guide is gone from the interwebs... try http://www.sencha.com/forum/showthread.php?70352-Upgrading-to-Ext-3

Why are you including Sencha Touch and Ext JS on the same page? If you're planning on trying to run an Ext JS GridPanel on a mobile site... you probably aren't going to have an optimal user experience.

Also, just FYI, Ext JS 3 is not new (current version is 3.3). It came out about a year and a half ago, and Ext 4 is due to hit beta within the next couple of months. Might want to consider holding off on a large migration effort to 3.x if possible.