var dataTable = $('#table')

.on( 'processing.dt', function ( e, settings, processing ) {

    $('#loading_overlay').css( 'display', processing ? 'block' : 'none' );

    if (!processing && dataTable  != null) {

        console.log("processing finished.")

    }

})

.on('xhr.dt', function ( e, settings, json, xhr ) {

    console("xhr event: ajax responsed");

    if (json["success"] == true) {

    }

})

.on( 'page.dt', function () {

    console("paging processed.");

})

.on( 'draw.dt', function () {

    console("draw processed.");

})

.on( 'init.dt', function () {

    console("init processed.");

})

.on( 'click', 'tbody td', function () {

})

.DataTable({

     // settings....

});