multiple columns Concatenation in single column

suser

Hi

i try to create table through jquery now i successfully display table and data

  ```
          if (re.length > 0) {

                    $("#services_schdulue").append
                    $('#services_schdulue thead').append(
                    "<tr><th>Concatenate</th><th>No</th><th>Status</th><th>Speed</th><th>Reference</th></tr>"
                       );

                    for (var i = 0; i < re.length; i++) {
                        if (re[i] !== null) {
                            $('#services_schdulue tbody').append('<tr><td>' +con +
                                                                 '</td><td>' + re[i][1] +
                                                                 '</td><td>' + re[i][2] +
                                                                 '</td><td>' + re[i][3] +
                                                                 '</td><td>' + re[i][4] +
                                                                 '</td></tr>');
                        }
                    }
                }


                var myTable = $('#services_schdulue').DataTable();

```
I try to concatenate NO , Status and Speed column .. like this
var con = re[i][1].concat(re[i][2, re[i][3]);

but this show undefined result

how i do that ?
check this js fiddle

https://jsfiddle.net/wtnwgz09/14/