Decide between extJS and GWT

Question

we're in the process of deciding our next web application framework strategy, and there's a lot to think about.

After going over several solutions, we've restricted our sight to 2 RIA frameworks: extJS and GWT.

Which one would you suggest between these two?

We're already experienced in jQuery, should it somehow matter.

Thanks.

Answer 1

While it is not possible to provide an objective answer to your question without being intimately familiar with your project's situation here are a few things to consider -

• ExtJS will require JavaScript expertise (in addition to the familiarity required with the ExtJS api itself)
• Even if you use ExtJS for your front end, you will still need Java (or whatever server side language you choose) expertise for your server side logic.
• In comparision, with GWT you can do with lesser level of Javascript expertise. You do have to get to know the GWT way (and tools for) of development, the api, etc.
• Both will allow you to do whatever you want in terms of your front end capability.
• While comparing available widgets, etc consider the huge number of ExtJS extensions and plugins available. These are as valuable as the core ExtJS widgets in some situations.
• Ext GWT seems like an option but I would rather use ExtJS OR GWT than use a combination of both unless there is a very specific reason.
• If you have JavaScript expertise but no Java AND there is no specific reason to use Java, I would go for ExtJS (and a server side language with simpler learning curve than Java)

(Very) Slightly related post here

Answer 2

My company faced the same decision about two years ago and decided to use ExtJS. I'm happy with that decision. Javascript is more flexible and less wordy than Java, and the Javascript edit/test cycle is very short. Just save the change and refresh the browser. And it's relatively easy to extend the ExtJS classes to add any needed feature. Java changes require compilation and frequently require a server restart. Those little interruptions are very expensive.

Ultimately, I think it comes down to whether you prefer working in Javascript or Java. I prefer the flexibility and conciseness of Javascript, and the speed of zero-delay testing.