How to get a hidden Id to delete a record in a jQuery Datatable

Question

I have Edit and Delete buttons in my jQuery DataTable. The first column is a record ID column and is hidden. I have event handlers for the Edit and Delete buttons. Should I rather use the event handler for the DataTable click and tr function to get the id, or if using the button event handlers (preferable), how can I get the Id from the row? i.e. identify which row was clicked on?

 const dataTable = $('#personTable').DataTable({
        data: serializedObject,
        columns: [
            { data: 'ID', 'visible': false},  
            { data: 'TitleCode' },
            { data: 'TitleDetail' },
            { data: 'FirstName' },
            { data: 'LastName' },
            {data: null}
        ],
        columnDefs: [
            {
                targets: 8, 
                data: 'ID',  //'<div class="btn-group" style="width:70px"> <button type="button"' +
                defaultContent: '<div class="floatRightClass" >' +
                        '<a class="btn btn-default glyphicon glyphicon-pencil btn-edit" title="Edit"> </a>' +
                        '<a class="btn btn-default glyphicon glyphicon-trash btn-delete" title="Delete"> </a>' +
                    '</div>'
            },

        ]
    });

    $(".btn-delete").click(function (e)
    {
        var dtTable = $('#personTable').DataTable();
        var selectedRows = dtTable.rows('tr.selected');

        var id = selectedRows.data().toArray().map(function (row) { return row.id });
        console.log("id= " + ID);

        // or
        console.log("id= " + dataTable.rows('tr.selected').data().toArray().map(function(row){return row.ID}));


        // This works, but the row index is hardcoded
        alert("..." + dtTable.cells({ row: 0, column: 0 }).data()[0]);

        // Error: undefined
        selectedIndex = dtTable.row(this).data()[0];
        alert("Id = " + selectedIndex.ID);

    });

   $('#personTable tbody').on('click', '.btn-delete', function ()
    {
        var tr = $(this).closest("tr");
        var rowindex = tr.index();

        alert("rowindex " + rowindex);

        // Get the value of the ID in the hidden column (col: 0)
        alert("..." + dataTable.cells({ row: rowindex, column: 0 }).data()[0]);
    });

Answer 1

By using the $('#personTable tbody').on('click', '.btn-edit2', function () I can get the index of the row and the hidden cell value orID for use in serverSide - Db - Processing.