title: delete the selected row on the second page does not work
body: <p>I managed to implement checked all with checkbox input in jquery DataTable.</p>
  <p>Rows selected on the first page can be deleted properly. however the selected rows on the next page cannot be deleted.</p>
  <p>I'm confused to continue the code below. any suggestions?</p>
  <p>Thank You</p>
  <pre><code>    let rows = table.rows({ 'search': 'applied' }).nodes();
  
      if ($('input:checked', rows).length &gt;= 2) {
          if (confirm('Are you sure ?')) {
                  **$.post(url, $('.form-product').serialize())**
                  .fail((errors) =&gt; {
                      alert('Can't delete data');
                      return;
                  });
          }
      } else {
          alert('Select the data to be deleted!');
          return;
      }
  </code></pre>