preDraw fires twice: intentional?

bur

In tables with serverSide/ajax, the preDraw event fires twice, before and after the xhr event, except on init where it only fires after the xhr event. The same is true for the processing event. See this test case: https://live.datatables.net/dutubivu/1/
I'm actually using this to my advantage because I need to perform one action immediately, and another only after the new data from the ajax is request is available:

let init = true, predraw = false;
myTable.on("preDraw", function() {
    if (!predraw) { // first event
        if (init) init = false;
        else predraw = true;
        // perform some action ASAP
    }
    else { // second event
        predraw = false;
        // perform an action using the new data
    }
});

So I'm wondering if this is intentional, or if I need to worry about this potentially being changed in future versions of DataTables?

allan

The first will be when the table initialises and has no data yet (shows a "Loading..." string), the second is when the table actually has the data and draws, so yes that is expected and correct.

Allan

bur

Ok, thanks for the quick answer!