很cool！
Spket Eclipse Plugin & IDE
The Spket IDE has by far the most superior code assist for Ext 2.0. It uses the Ext .jsb project file and embedded script doc to build code assist that includes options inherited from base classes and full documentation.

It doesn’t have much for editing other types of files though (e.g. CSS), so my preference is to install it as an Eclipse plugin in Aptana. To install the plugin in Aptana:

• Download and install Aptana Studio (includes Eclipse).
• Start Aptana and navigate the application menu to: Help → Software Updates → Find and Install… → Search for new features to install → New remote site…
• Name: “Spket”, Url: “http://www.spket.com/update/”
• Restart Aptana
• Watch this Spket IDE Tutorial to see how to easily add Ext code assist (you can point it at the latest /src/ext.jsb to keep code assist up to date with the latest Ext version). The steps are basically:
  • Window → Preferences → Spket → JavaScript Profiles → New
  • Enter “ExtJS” and click OK
  • Select “ExtJS” and click “Add Library”, then choose “ExtJS” from the dropdown
  • Select “ExtJS” and click “Add File”, then choose the “ext.jsb” file in your “./ext-2.x/source” directory
  • Set the new ExtJS profile as the default by selecting it an clicking the “Default” button on the right-hand side of the “JavaScript Profiles” dialog.
  • Restart Aptana
  • Create a new JS file and type: Ext. and you should get the Ext Code completion options.

Since you will have installed it as a plugin in Aptana, chances are Aptana will still be your default JS editor. So to try Spket, you need to right click on a file and select Open with -> Spket JavaScript Editor.

 

Spket in Aptana with full documentation and code assist