I Have a Code like this:
var caso=0;

$(document).ready(function() {
    var d = new Date();
        $.ajax({
                type:"get",
                url:"traermov.php",
                encode:true,
                    dataType:"json",
                success:function(data){
                var table = new $('#tablamov').dataTable({
                    data: data,
                    columns: [
                        { title: "ID" },
                        { title: "Lote" },
                        { title: "Etapa" },
                        { title: "Personal" },
                        { title: "Fecha" },
                        { title: "Comienzo" },
                        { title: "Fin" },
                        { title: "Cantidad" }
                        ]
                        });
                $("#movimiento").show();
                $("#movimiento").prepend("<button onclick='hoy()'>Hoy</button>");
                $("#movimiento").prepend('<h3>MOVIMIENTOS:</h3>');
            },

         });

        table.columns().flatten().each( function ( colIdx ) {
        // Create the select list and search operation
        var select = $('<select />')
            .appendTo(
                table.column(colIdx).footer()
            )
            .on( 'change', function () {
                table
                    .column( colIdx )
                    .search( $(this).val() )
                    .draw();
            } );
     
        // Get the search data for the first column and add to the select list
        table
            .column( colIdx )
            .cache( 'search' )
            .sort()
            .unique()
            .each( function ( d ) {
                select.append( $('<option value="'+d+'">'+d+'</option>') );
            } );
    } );
        event.preventDefault();
        });

GIVES this error:

Uncaught ReferenceError: table is not defined
WHY?
thnks