A: 

What are you using as a DataSource? If you care about when the DataSource is done loading data, you can use its doBeforeLoadData event which will allow you access to the DataSource before it is consumed by the DataTable.

Otherwise, if you are talking about "loaded" meaning that the table has finished being drawn, you can use the DataTable's postRenderEventevent.

There are a lot of events for these components that you can listen to.

pkananen
A: 

You can use the DataTable's renderEvent as in:

myDataTable.subscribe("renderEvent", function (o) {
// do someting with the data
});