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Thread: How hard can it be an "urgent" migration from 3.0.0 to 3.4.x?

  1. #1
    Sencha User
    Join Date
    Jan 2014

    Default How hard can it be an "urgent" migration from 3.0.0 to 3.4.x?


    Recently (3 months ago) I have started this job taking over maintenance of an application that uses Ext 3.0.0.

    I have my hands full with the app bugs and I wanted to wait to have it more stabilized to upgrade extJs (to begin with, to 3.4.x), but I found myself wanting to use some components that are not part of 3.0.0 (like

    How difficult is supposed to be if I just swap the libraries in my application with the 3.4.0 version? Will it be likely to break the current JS?

    Thanks in advance

  2. #2
    Sencha User
    Join Date
    Feb 2013


    I don't think there's a general answer here. It is preferred to upgrade more frequently, but you may have a smooth upgrade depending on what your code looks like. Can you test your code against 3.4.x to see how it performs?

  3. #3

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