call a function in success of datatable ajax call

You can use dataSrc :

Here is a typical example of datatables.net

var table = $('#example').DataTable( {    "ajax": {            "type" : "GET",            "url" : "ajax.php",            "dataSrc": function ( json ) {                //Make your callback here.                alert("Done!");                return json.data;            }                   },    "columns": [            { "data": "name" },            { "data": "position" },            { "data": "office" },            { "data": "extn" },            { "data": "start_date" },            { "data": "salary" }        ]    } );

You can use this:

"drawCallback": function(settings) {   console.log(settings.json);   //do whatever  },

The best way I have found is to use the initComplete method as it fires after the data has been retrieved and renders the table. NOTE this only fires once though.

$("#tableOfData").DataTable({        "pageLength": 50,        "ajax":{            url: someurl,            dataType : "json",            type: "post",            "data": {data to be sent}        },        "initComplete":function( settings, json){            console.log(json);            // call your function here        }    });