Javascript Showdown - ExtJSfiles.meetup.com/501101/extjs-showdown.pdf · Because of its abundance of widgets, ExtJS is very good at simulating a desktop-like UI. It has a very nice

Javascript Showdown - ExtJS

Rob Hoelz

INOC

October 18th, 2011

Rob Hoelz Javascript Showdown - ExtJS

ExtJS and I(NOC)


ExtJS Versions


The Good


Provides a large variety of widgets (especially Ext 4)


Provides a large variety of widgets (especially Ext 4)All of your standard desktop UI widgets


Provides a large variety of widgets (especially Ext 4)All of your standard desktop UI widgetsForms


Provides a large variety of widgets (especially Ext 4)All of your standard desktop UI widgetsFormsCharts


Provides a large variety of widgets (especially Ext 4)All of your standard desktop UI widgetsFormsChartsInfinite Grids


Provides a large variety of widgets (especially Ext 4)All of your standard desktop UI widgetsFormsChartsInfinite Gridsand so on...



Because of its abundance of widgets, ExtJS is very good atsimulating a desktop-like UI.




It has a very nice object system. (Ext 4.0)





It has module loading. (Ext 4.0)






Provides tools for doing MVC-style programming.







It has a nice event system.








It has good documentation.









Style-able.









Style-able.

Form Builder.









Style-able.

Form Builder.

Comes with a lot of utilities for things like DOM traversal,JSON parsing, etc.


ExtJS allows you to delegate actual widget creation to theframework:

var win = new Ext.Window({

layout: ’fit’,

items: [{

xtype: ’button’,

text: ’Click Me!’

}]

});

win.show();


In short, if you’re developing a Javascript-heavy applicationand you’re not doing anything too fancy, ExtJS is actually

pretty good.


The Bad


I just gave you the short version...


I just gave you the short version...The long version is a little more complicated.


ExtJS is okay (even enjoyable) to use as long as you’re notstraying too far from the framework.


ExtJS is okay (even enjoyable) to use as long as you’re notstraying too far from the framework.

And that is exactly what INOC’s applications tend to do.


Remember those MVC classes I mentioned earlier? It turnsout they’re pretty inflexible.



Grouping grids are kind of broken




Finicky when it comes to configuration (To be fair, this hasimproved a lot since Ext 3; but it’s still not the best)





Bad error reporting





Bad error reporting

Inconsistent API





Bad error reporting

Inconsistent API

Inflexible widgets/components





Bad error reporting

Inconsistent API

Inflexible widgets/components

Bad layout management


Documents

Javascript Showdown - ExtJSfiles.meetup.com/501101/extjs-showdown.pdf · Because of its abundance of widgets, ExtJS is very good at simulating a desktop-like UI. It has a very nice