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Thread: Ext JS 2.0.2 to 4.x Migration

  1. #1

    Default Ext JS 2.0.2 to 4.x Migration

    I have a web application using extjs 2.x and now I would like to upgrade to extjs 4.x

    Is it extjs 2.x not compatible with extjs 4.x and do I need to rewrite the web application?

    Any release note / web page show the difference between Ext JS 2.x / 4.x ?

  2. #2
    Sencha User
    Join Date
    Feb 2013


    That's a pretty major jump in versions. To make use of what Ext 4 has to offer, you will be rewriting a lot of code. There are no 2.x to 4.x upgrade guides, but here are some links that might be useful:!/guide/upgrade_41!/guide/upgrade_42

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