call a function in success of datatable ajax call

Question

Is that possible to invoke a javascript function in success of datatable ajax call. Here is the code am trying to use,

var oTable = $('#app-config').dataTable(
            {
                "bAutoWidth": false,                                                
                "bDestroy":true,
                "bProcessing" : true,
                "bServerSide" : true,
                "sPaginationType" : "full_numbers",
                "sAjaxSource" : url,                    
                "fnServerData" : function(sSource, aoData, fnCallback) {
                    alert("sSource"+ sSource);
                    alert("aoData"+ aoData);
                    $.ajax({
                        "dataType" : 'json',
                        "type" : "GET",
                        "url" : sSource,
                        "data" : aoData,
                        "success" : fnCallback
                    });
                }

is it possible to have something like,

success : function(){
    //.....code goes here
}

instead of "success" : fnCallback ------> which is last line of AJAX call. In this function I would like to check a value send from server side. Thanks in advance for any help....

Answer 1

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" }

        ]
    } );

Answer 2

Based on the docs, xhr Ajax event would fire when an Ajax request is completed. So you can do something like this:

let data_table = $('#example-table').dataTable({
        ajax: "data.json"
    });

data_table.on('xhr.dt', function ( e, settings, json, xhr ) {
        // Do some staff here...
        $('#status').html( json.status );
    } )

Answer 3

For datatables 1.10.12.

$('#table_id').dataTable({
  ajax: function (data, callback, settings) {
    $.ajax({
      url: '/your/url',
      type: 'POST',
      data: data,
      success:function(data){
        callback(data);
        // Do whatever you want.
      }
    });
  }
});