About EXTJS ver.2.2 :

- It is a framework.
- 100% client side implementation.
- It is used as a standardization of Java side implementation on client side.
- JS DOM and XML DOM are incorporated in EXT JS
- It is a part of Yahoo toolkit.
- It is used by other technologies apart from JAVA.
- ITs a widget which has its own lifetime so we can call but we can't control over the lifetime.

- It's a hierarchical if you hold the root tag you can traverse all the elements within it using getByElementId
- EXT.get('myElementId')
- 2 methods
- class method prefix the calling object with '.'
- Object method prefix the calling object with '#'
- Flyweight Design Pattern is a pattern which traverse the root object and collect all the wastes.
- SPECIFIC FLYWEIGHT when it is used for a single object.
- GLOBAL FLYWEIGHT when it is used for a multiple object.
- It reconstructs old object when it is required.
- 58 widgets are builtin out of which 36 are UI widgets.
- EXT.onReady is an eventhandler which is used to start the hierarchy of DOM structure.
- Node is a super object.




JSF (Java Server Faces)

- It is used for server side implementation
- It is used as a standardization of Java side implementation on server side.


steps:

2.ASP.jar and servlets.jar
3.Add core kernel JS files in the webcontent folder.Helping JS files are needed to be placed in the specific folders.
4.EXT js specific handlers needs to be used and inject your JS files into the core by using EXT JS authorized DOM's
5.Place your project in a necessary folders.