Sort table by class in TH

Question

I have a table with 10 columns, every column has a different class, for example the last has: data-tot

How to sort the table by this class and in descending order?

A full jsFiddle is available here, but a small sample of the HTML looks like this (the odd and even rows continue for the full data).

<table class="sp-league-table sp-data-table sp-sortable-table sp-scrollable-table sp-paginated-table dataTable no-footer" data-sp-rows="30" id="DataTables_Table_9" role="grid">
  <thead>
    <tr role="row">
      <th class="data-rank sorting" tabindex="0" aria-controls="DataTables_Table_9" rowspan="1" colspan="1" aria-label="Pos">Pos</th>
      <th class="data-name sorting" tabindex="0" aria-controls="DataTables_Table_9" rowspan="1" colspan="1" aria-label="Squadra">Squadra</th>
      <th class="data-gia sorting" tabindex="0" aria-controls="DataTables_Table_9" rowspan="1" colspan="1" aria-label="GIA">GIA</th>
      <th class="data-ros sorting" tabindex="0" aria-controls="DataTables_Table_9" rowspan="1" colspan="1" aria-label="ROS">ROS</th>
      <th class="data-gio sorting" tabindex="0" aria-controls="DataTables_Table_9" rowspan="1" colspan="1" aria-label="6GIO">6GIO</th>
      <th class="data-giotwo sorting" tabindex="0" aria-controls="DataTables_Table_9" rowspan="1" colspan="1" aria-label="5GIO">5GIO</th>
      <th class="data-giothree sorting" tabindex="0" aria-controls="DataTables_Table_9" rowspan="1" colspan="1" aria-label="4GIO">4GIO</th>
      <th class="data-giofour sorting" tabindex="0" aria-controls="DataTables_Table_9" rowspan="1" colspan="1" aria-label="3GIO">3GIO</th>
      <th class="data-tav sorting" tabindex="0" aria-controls="DataTables_Table_9" rowspan="1" colspan="1" aria-label="TAV">TAV</th>
      <th class="data-tot sorting" tabindex="0" aria-controls="DataTables_Table_9" rowspan="1" colspan="1" aria-label="TOT">TOT</th>
    </tr>
  </thead>
  <tbody>
    <tr class="odd" role="row">
      <td class="data-rank">1</td>
      <td class="data-name"><a href="http://www.quartuleague.com/squadra/consulenza-impresa/">CONSULENZA IMPRESA</a></td>
      <td class="data-gia">0.5</td>
      <td class="data-ros">0</td>
      <td class="data-gio">0.5</td>
      <td class="data-giotwo">1</td>
      <td class="data-giothree">0</td>
      <td class="data-giofour">0</td>
      <td class="data-tav">0</td>
      <td class="data-tot">2.0</td>
    </tr>
    <tr class="even" role="row">
      <td class="data-rank">2</td>
      <td class="data-name"><a href="http://www.quartuleague.com/squadra/new-team/">NEW TEAM</a></td>
      <td class="data-gia">0.5</td>
      <td class="data-ros">2</td>
      <td class="data-gio">1.0</td>
      <td class="data-giotwo">1</td>
      <td class="data-giothree">0</td>
      <td class="data-giofour">0</td>
      <td class="data-tav">0</td>
      <td class="data-tot">4.5</td>
    </tr>
  </tbody>
</table>

Answer 1

As from you link you are not using DataTables. you need to simple give an id to you table. And the rest will do DataTables.
Here is updated link

Answer 2

SOLUTION

Use the code below to sort table by column specified by jQuery selector .data-tot in descending order.

$('#myTable').DataTable().column('.data-tot').order('desc').draw();

See columns().order() for more details.

DEMO

See updated jsFiddle for code and demonstration.