[EXT JS]Configuration for ExtJS 4.1 on Eclipse

I am working on a small project using ExtJS currently.

The development environment: Eclipse IDE with Aptana Plugin 3, and Spket Plugin, with ExtJS 4.1 code assist.

(1) Install Aptana plugin, in the menu, windows -> install new softwares -> add, and use following link:

http://download.aptana.com/studio3/plugin/install

(2) Install the Spket, again windows -> install new softwares -> add, and use following link:

http://www.agpad.com/update/

(3) After then we need to install ExtJS code assist.

There are many toturials but only this gives almost correct guide.

http://www.spket.com/extjs.html

There is still a small mistake that before selecting the sdk.jsb3, we need to first move it from the "build" folder to the root folder (see http://forums.spket.com/viewtopic.php?f=6&t=3656), after all these you need to restart your eclipse, then the code assister will work.

After these steps we can create web project, new project -> Web Project -> Default Project.

Reference : 

http://forums.spket.com/viewtopic.php?f=3&t=3667

http://stackoverflow.com/questions/11404760/cannot-install-aptana-plugin-on-eclipse-4-2