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## OpenLayers Workshop

# Exploring Ext JS

Ext JS is an extremely full-featured library for complex layouts and dynamic widgets. Ext JS is especially useful for mimicking desktop applications in a browser. While the library is a heavier dependency and in turn a larger download than jQuery UI, it does provide a more robust tool set.

Ext JS links:

- Ext JS overview http://extjs.com/products/extjs/
- Ext JS samples http://extjs.com/deploy/dev/examples/
- Ext JS documentation http://extjs.com/deploy/dev/docs/

Note that the entire Ext JS example set and documentation is available in the `ext` directory packaged with this workshop. Spend a bit of time exploring the Ext examples and figuring out how to use the documentation.

Given a basic understanding of Ext JS, you’re ready to move on to creating an opacity slider.

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