如何更改Jquery datatable中lengthmenu的行为?

Jquery datatable的大多数属性都应用在下面的代码中,因为您没有确定要更改的正确选项,所以可以尝试使用这些属性。

$('#dtId').DataTable({
            "ajax": {
                "url": "/search/LoadData",
                "type": "GET",
                "datatype": "json"
            },

            "info": true,
            "responsive": true,
            "paging": true,
            "pageLength": 10,
            "ordering": true,
            "dom": 'T<"clear">lfrtip',
            "pagingType": "full_numbers",
            "language": {
                "lengthMenu": "Display _MENU_ Per Page",
                "info": "Displaying _START_ - _END_ of _TOTAL_",
                "paginate": {
                    "first": '<i class="fa fa-angle-double-left" ></i> First',
                    "previous": '<i class="fa fa-angle-double-left" ></i> Previous',
                    "next": 'Next <i class="fa fa-angle-double-right" ></i>',
                    "last": 'Last <i class="fa fa-angle-double-right" ></i>'
                },

            },
            "dom": "<'row'<'col-sm-4'i><'col-sm-4'p><'col-sm-4'l>>" + "<'row'<'col-sm-12'tr>>",
            "scrollX": true,
            "lengthMenu": [
                 [5, 10, 15, 20, -1],
                 [5, 10, 15, 20, "All"] // change per page values here
            ],
            "buttons": [
                'csv', 'excel', 'pdf'
            ] 
        });