user definable footer summaries via drop down

[bchr02]

A nice feature to add is a button that toggles a row to appear above the footers that would contain drop downs with summary options based on the content of the cell. For integers, for example, it could show (count, min, max...) Please see the below example, which I have taken from my own table function which I have created and implemented this in.

[bouks]

Maybe you could implement yourself in jsgrid source or give us some sources that we don't have to rewrite things you already did.
It may be interesting to have the possibility to put the summary on top of the rows.