javascript - DataTables: json is undefined in initComplete() -

jquery.datatables.min.js: datatables 1.10.12

i need access table rows after data has been loaded (deferred). , can't because json undefined me inside initcomplete function. despite table loaded , see data. also, there settings data inside function.

why that? did forget option?

my code:

var data_table = task_submit_table.datatable({     "initcomplete": function (settings, json) {       console.log(json);     },     "processing": true,     "serverside": true,     "deferrender": true,     "deferloading": 0,     "ordering": true,     "order": [[ 0, "desc" ]],     "ajax": {       "url": "get_task_list/",       "type": "post",       "datatype": "json"     },     "columns": [       {"title": "id", "data": "id"},       {"title": "date", "data": "date"},       {"title": "project id", "data": "project_id"},       {"title": "project name", "data": "project_name"},       {"title": "project", "data": "biobank_project"},       {"title": "#hashes", "data": "nhashes"},       {"title": "#success", "data": "nsuccess"},       {"title": "#fail", "data": "nfail"},       {"title": "status", "data": "status"},       {"title": "report", "data": null},       {"title": "", "data": null},       {"title": "", "data": null}     ],     "columndefs": [       {         "targets": [0],         "visible": false,         "searchable": true       },       {         "targets": [2],         "visible": false,         "searchable": true       },       {         "targets": -3,         "data": null,         "defaultcontent": "<form id='tool-export' method='post' action='export/'>"+           "<a href='#' id='export' class='btn btn-default export-link'>export</a></form>"       },       {         "targets": -2,         "data": null,         "defaultcontent": "<a href='#' id='task-delete' class='btn btn-default task-delete-link'"+           "data-toggle='modal' data-target='#confirm_modal'>delete</a>"       },       {         "targets": -1,         "data": null,         "defaultcontent": "<a href='#' id='task-restart' class='btn btn-default task-restart-link'"+           "data-toggle='modal' data-target='#confirm_modal'>restart</a>"       }     ],     "dom": "<\"dt-btn-floatleft\"l><\"dt-btn-floatright\"b><\"dt-btn-clear\">rtip",     "buttons": [       {         "title": "refresh",         "text": "refresh",         "action": function () {           data_table.draw();         }       }     ]   });   data_table.draw(); 

in frontend table looks this:

the rows in deferred datatables can accessed via rowcallback function. see full response here https://stackoverflow.com/a/40659721/2393924