shiny DataTables footer Callback sums
问题 I'm working on implementing a callback function for DataTables in a shiny app similar to this example from the DataTables forum. My thought so far from reading the DT documentation (section 4.4) was that it might be possible to apply the same class sum through the columnDefs argument of options as below, but it would also make sense if I just knew where to put the JS argument to do the classes manually like in the link. You can delete all the columnDefs and callback arguments to see an