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Oracle Application Express 4.0 with Ext JS by Mark Lancaster

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Eliminating unused Ext JS library components

Even with compression enabled, the Ext JS library and CSS files are still quite large. So, we will look at reducing the size of the source files using the JSBuilder2 utility.

Up to this point, the APEX page templates we have developed included the ext-base.js and ext-all.js JavaScript files in addition to the JavaScript files which are automatically included by APEX. We can reduce the size of the Ext files, by removing duplicate functionality and unused components.

Early versions of Ext required one of the following base libraries to be included:

  • YUI
  • jQuery or
  • Prototype/Script.aculo.us

Ext contains adapters that provide some of the basic plumbing utilities from those libraries, including Ajax support, animation, ...

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