JAVASCRIPT

datatables show all rows

$(document).ready( function () {
  $('#example').dataTable( {
    "pageLength": 25
  } );
} );

datatable get all selected row data

var table = $('#example').DataTable(); 
$(document).on( 'click', '#FilterTable tbody tr', function () {
            $(this).toggleClass('selected');
            var ids = $.map(tableObject.rows('.selected').data(), function (item) {
                return item
            });
            console.log(ids) // here it will retur array of object 
        } );

// you can also do this by clicking another method

datatables get all rows

var table = $('#example').DataTable(); 

table.rows().data().map((row) => {
  // each row is an array where each column is an element in the array
  // as a string
}