1. #1
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    charliez is on a distinguished road

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    Default Need Advice: learn extjs 3 or 4

    Need Advice: learn extjs 3 or 4


    Hi
    I am starting with ExtJS and I see that there is a new version. extjs 4

    Need your advice on deciding if I should study/learn extjs 3 and then just
    learn the changes that 4 introduced or should I start from scratch studying/learning extjs4.

    The app I need to learn extjs for is written in version 3 and will switch to 4 in
    the next 6-12 months, so... please help me decide (there are books on extjs 3 and I have
    not find one for extjs 4, how would you rate the extjs 4 docs?)

    TIA
    carlos

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    Justin Noel is on a distinguished road

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    Default


    I'm in the same boat. I'm literally starting with ExtJS for the first time. I've got a very rush job to do and thought getting started with ExtJS3 would be quickest due to available docs, tutorials, etc.

    Also, the Ext Designer supports ExtJS3 and produces most of the code for you.

    So, I spent some time making a very simple ExtJS3 app with the Designer to generate the code. Then, I spent time learning the MVC architecture of ExtJS4. Once I'd read that "guide" I was a lot more comfortable and decided to just roll with ExtJS4 for this new app.

    Progress is very slow, but I am getting there. So, my advice is based on your timeline. If you can afford the time to invest in 4.0, do so. Otherwise, use Ext Designer to generate 3.X code and roll with it.

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    deskwideweb is infamous around these parts

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    Default


    Something to keep in mind: Ext4 is not especially backward compatible with Ext3. So if you learn Ext3 first, you will probably need to do significant rework, when/if somebody decides your app needs to run on Ext4

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    Thanks for the advice Justin and deskwideweb

    so what i gather from your advice and other threads is that it is
    better to go with 4.0 mainly to not have to learn some parts and
    then unlearn them and relearn the new 4.0 ways.

    I guess the problem of this is that there is kind of a gap in the docs
    other than the api ones (http://dev.sencha.com/deploy/ext-4.0.0/docs/).

    So I am going to learn 4.0 following the "methods" outlined in the 3.0 books
    (Packt, Manning, cookbook) but using the above docs to do it the 4.0 way.
    Which I think is exactly what Jesus is going to be doing for his 4.0 book, to
    fill the gap...

    Unfortunately most of the tutorials, demos and the like are for 2.0, 1.0 versions
    so they are even less useful...

    Thanks again and if anybody has other sources of info, please pass them along...

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    Yes, the old tutorials are useless as most are for 1.X and 2.X.

    This site has some 3.X tuts that are pretty decent.

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    Default www.extjs-tutorial.com

    www.extjs-tutorial.com


    Visit www.extjs-tutorial.com to learn ExtJS 4 step by step.

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