Duplicate empty header occur in datatable when enabling scrollX or scrollY when using Google Chrome

Question

I have a datatable in my program. And I want it to be scrollable horizontally so what I did was like this:

var tableI = $('#table_data').DataTable({
    "bLengthChange": false,
    "scrollX": true,
     "dom": 'frtp'
});

It came out like this(as sample output):

It doubled the header. How am I going to fix this?

EDIT: Here's another sample:

here's my HTML code:

<table class="table table-striped" id="act_data" width="100%">  <div style="float:left;width:385px" >
    <button type="button" id="edit_acc" class="btn btn-primary" data-toggle="modal" data-target="#editAcc"><span class=" fa fa-edit "> Edit Account</span></button>
      <button type="button" id="de_act" class="btn btn-primary" data-toggle="modal" data-target="#DeAcc"><span class=" fa fa-edit "> Activate/Deactivate</span></button>
      <!-- <button type="button" id="refresh" class="btn btn-link"  data-target="#DeAcc"><span class="fa fa-refresh"></span></button>-->
      <a href="<?php echo site_url('admin/homeAdmin/homepage')?>?id=6" class="btn btn-link"><span class="fa fa-refresh"></a>
    </div><thead class="header">
      <tr class="well">
        <th style="font-size: 14px;">Employee ID#</th>
        <th style="font-size: 14px;">Username</th>
        <th style="font-size: 14px;">Account Type</th>
        <th style="font-size: 14px;">Status</th>
      </tr>
    </thead>

    <tbody>
      <?php if($result != NULL){?>
        <?php foreach($result as $row){ ?>
            <tr>
               <td style="font-size: 15px;padding-left: 20px;">
                   <?php echo $row->employeeID;?>
                   <input type="hidden" name="userID" id="userID" value="<?php  echo $row->userID;?>" />
                   <input type="hidden" name="pass" id="pass" value="<?php  echo $row->password;?>" />

              </td>

              <td style="font-size: 15px;padding-left: 20px;">
                   <?php echo $row->username;?>
              </td>
              <td style="font-size: 15px;padding-left: 20px;">
                   <?php echo $row->usertype;?>
              </td>
              <td style="font-size: 15px;padding-left: 20px;">
               <?php echo $row->status; ?>
               </td>

          </tr>
        <?php }?>
      <?php }?>
    </tbody>
  </table> 

Answer 1

I had the same issue with firefox & firefox developer edition. The root cause is, when we set scrollX:true, datatable adds an additional div with a table and a header inside, apart from the table & header already constructed. This is to get the scrolling within table effect.

Datatable, tries to set the height to 0px, to hide it. Some browsers don't interpret this properly.

<tr style="height: 0px;" role="row"> 

To hide it, changing the style to this row to 'hidden' will break the structure of the table. The working solution would be, to have visibility:'collapse'

Sample datatable configuration:

        tableElement.DataTable({
            "scrollX": true,
            "initComplete": function(settings, json) {
                $('.dataTables_scrollBody thead tr').css({visibility:'collapse'});
            }
            //other datatable configurations...  
        });

since it's a table, we need to have visibility:'collapse' and not visibility:'hidden' - more info on visibility css property

Answer 2

Solution 1 :

To Resolve This Please Use "scrollXInner": true Avoid to Using "scrollX": true"

var tableI = $('#table_data').DataTable({
    "bLengthChange": false,
    "scrollX": true, //Do Not Use This (Remove This Line)
    "scrollXInner": true //Use This (Add This Line)
     "dom": 'frtp'
});

Solution 2 :

OR You Can Add This CSS

.dataTables_scrollBody thead tr[role="row"]{
    visibility: collapse !important;
}

Answer 3

I had the same issue on Google Chrome. This was the fix:

.dataTable(
        {
          "processing": false,
          "serverSide": false,
          "autoWidth": true,
          "columnDefs": [
            {"orderable": false, "targets": [5, 6]}
          ],
          "order": [1, 'asc'],
          "dom": 'l<"toolbar">frtip',
          drawCallback: function () { // this gets rid of duplicate headers
              $('.dataTables_scrollBody thead tr').css({ display: 'none' }); 
          },
          scrollY: '65vh',
          scrollCollapse: true,
          paging: false
        });

Answer 4

The solution was simple in my case. Just include this on your css:

/* Override sorting header --> DataTable Bug */
.dataTables_scrollBody > table > thead > tr {
    visibility: collapse;
    height: 0px !important;
}

Answer 5

Good explanation by Sairam. Better way would be to use just a CSS

div.dataTables_scrollBody thead {           
    display: none;
}

Answer 6

Try something like this:

"scrollX": '100%',

"scrollXInner": '125%',

Answer 7

This worked for me:

$('#DataTables_Table_0').on( 'draw.dt' function() {
    $('.dataTables_scrollBody thead tr').addClass('hidden')
}

Reference: geam's March 2015 answer on datatables.net forum

Answer 8

The best way is to use

dataTable.columns.adjust();

on init/draw callback

Answer 9

You can use Following code in your CSS:

div.dataTables_scrollHeadInner table { margin-bottom: 0px !important; }