Here is a Highstock extension for ExtJs 4. The extension is derived from the original work of Highcharts ExtJs adapter with significant modifications. Although Highstock shares the same APIs and similar configs as the Highcharts, I tried my best to change as little as possible in terms of usage. With the correct setup, this extension can do all the different plots as the original Highstock demos in ExtJs 4 framework.
This is a rather long article. The first part is to demonstrate how to create a Highstock config in ExtJs 4. The second part is to describe how to use the extension to achieve more advanced plots shown in the Highstock demos. Hopefully, you won’t find it too difficult to follow.