fnDraw appears to be asynchronous.

benwilson

I am trying to delete some rows on the server, then redraw my table, then get the number of rows remaining in the table. I am using server-side processing.

[code]

oTable.fnStandingRedraw();
var numRows = oTable.fnSettings().fnRecordsTotal();
...
[/code]

The problem is that my numRows is calculated before the table is redrawn, so it displays the number of rows prior to this operation. Is there a way to wait until the table is redrawn before getting the number of rows?

allan

If you are using server-side processing, then yes, absolutely fnDraw is async, since it makes an Ajax call to the server :-).

What you can do is listen for the 'draw' event that DataTables fires:

[code]
$(myTableSelector).one('draw', function () {
... number calculation;
} );
[/code]

The jQuery 'one' method is very handy for situations such as this, where yo want to listen for the event once and then detect the listener - jQuery does that later part for you :-)

Allan

benwilson

Thanks, that's exactly what I needed.

-Ben

allan

No problem at all. I'm going to improving the events documentation as part of the 1.10 documentation revamp :-).

Regards,
Allan