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Actually, the Compatibility matrix shows the compatibility between RowGroup and FixedColumns. It would be better to update the matrix :)

help: http://live.datatables.net/qemodapi/1/edit It uses columns.render to create the buttons.

We're happy to take a look, but as per the forum rules, please link to a test case - a test case that replicates the issue will ensure you'll get a quick and accurate response. Information on how to create a test case (if you aren't able to link to the page you are working on) is available here. Cheers, Colin

One option is to use columns().data() chaining toArray() to get the data into two arrays (within an array). Then use a loop to access each element in the array for your calculation. See if this example gets you started: http://live.datatables.net/popacuwa/1/edit Kevin

The diff column would require rowspan to be used which isn't supported, by Datatables, in the tbody. One option might be to use the RowGroup extension. You can group by the index column then output the difference in the row added by RowGroup. For example: http://live.datatables.net/hicegewa/2/edit There are some comments in the example. See this example for rowGroup.endRender for more details. Kevin

is there any way to use it with the firebase?

that's no problem. if you don't know how to do it just search the forum. I think I posted a couple of things on that matter. Here is an example: { data: "contract_copy.done", render: function (data, type, row) { if (data <= '0') { return '<i class="fa fa-square-o fa-lg text-center" style="display:block" aria-hidden="true"></i>'; } return '<i class="fa fa-check-square-o fa-lg text-center" style="display:block" aria-hidden="true"></i>'; } }

Duplicate of this thread - please don't post twice. Colin

yea!!... that was the solution... thanks again Kevin!! "footerCallback": function ( row, data, start, end, display ) { var rsTot = table.ajax.json(); var api = this.api(), data; $( api.column( 2 ).footer() ).html(rsTot.ent); $( api.column( 3 ).footer() ).html(rsTot.sal); $( api.column( 4 ).footer() ).html(rsTot.exi); $( api.column( 5 ).footer() ).html(rsTot.apd); $( api.column( 6 ).footer() ).html(rsTot.dis); }

Looks like you are using the Gyrocode checkbox plugin which uses the Select extension. The example shows how to get the selected rows. Kevin