สอบถามการส่งค่าผ่าน Ajax ก่อน เเล้วค่อย Export Excel ต้องส่งค่าไปยังไงและรับยังไงค่ะ คือต้องการคลิกปุ่ม Export Excel หลังจากทำการค้นหาจากช่อง

<script>

    $(document).ready(function() {
		
		var currentYear = (new Date).getFullYear();
		//alert(currentYear);
      $('#dataTables1').dataTable({
		   responsive: true,
          "order": [[ 0, "desc" ]],
          "lengthMenu": [[-1, 10, 25, 50, 100], ["All", 10, 25, 50, 100]],		 			  
          "processing": true,
         "serverSide": true,
         "ajax": "../server_side/scripts/server_processing.php"
         //"sAjaxSource":"response.php",
	//"dom": 'lBfrtip',
       "buttons": [
            {
                extend: 'collection',
                text: 'Export',
                buttons: [
                    'copy',
                    'excel',
                    'csv',
                    'pdf',
                    'print'
                ]
            }
	  ],
		  "fnRowCallback": function (nRow, aData, iDisplayIndex, iDisplayIndexFull) {
			
		  }
      	    });
      	  });
  </script>

		 "buttons": [
            {
                extend: 'collection',
                text: 'Export',
                buttons: [
                    'copy',
                    'excel',
                    'csv',
                    'pdf',
                    'print'
                ]
            }
	  ],

        $('#table_print').DataTable({
          "fnRowCallback": function (nRow, aData, iDisplayIndex, iDisplayIndexFull) {
          $( ".print" ).click(function() {
            var rel = $(this).attr('rel');
            var s = $("input[name='start"+rel+"']").val();
            var e = $("input[name='end"+rel+"']").val();
            var r = $("input[name='round"+rel+"']").val();
            var n = $("input[name='nameid"+rel+"']").val();
            console.log("rel:"+rel+"/start:"+s+"/end:"+e+"/round:"+r+"/"+n+"");
              if ( $.trim( s ) === '' || $.trim( e ) === '' || $.trim( r ) === '' || $.trim( n ) === '' ){
                alert('Error');
              return false;
              }else{
              var url = "<?php echo site_url('code/export'); ?>/"+s+"/"+e+"/"+r+"/"+n+"";
              window.open(url, '_blank');
              }
          });
          }
        });