How to export data to csv from datatable

hi icarted datatable by below code how to add butoon to export the data to exel

let element = frm.get_field("result_html").$wrapper.get(0);

         frm.doc.doo = new frappe.DataTable(element, {

            columns: [ {

                name: 'Name',

                id: 'name',

                editable: true,

                // resizable: false,

                // sortable: false,

                // focusable: false,

                // dropdown: false,

                width: 200,

                format: (value) => {

                    return value.bold();}}

                , 'Position', 'Salary'],

            data: [

                ['Faris', 'Software Developer', '$1200'],

                ['Manas', 'Software Engineer', '$1400'],

            ], checkboxColumn: true,

            inlineFilters: true

                    });