tablesorter pager.js is not working I have successfully added the tablesorter.js library to a table in my drupal website but when I try to add the pager, the input and select Html that I add do not show up.  I add this HTML 

    &lt;div id="pager" class="pager"&gt;
    &lt;form&gt;
        &lt;img src="../addons/pager/icons/first.png" class="first"/&gt;
        &lt;img src="../addons/pager/icons/prev.png" class="prev"/&gt;
        &lt;input type="text" class="pagedisplay"/&gt;
        &lt;img src="../addons/pager/icons/next.png" class="next"/&gt;
        &lt;img src="../addons/pager/icons/last.png" class="last"/&gt;
        &lt;select class="pagesize"&gt;
            &lt;option selected="selected"  value="10"&gt;10&lt;/option&gt;
            &lt;option value="20"&gt;20&lt;/option&gt;
            &lt;option value="30"&gt;30&lt;/option&gt;
            &lt;option  value="40"&gt;40&lt;/option&gt;
        &lt;/select&gt;
    &lt;/form&gt;
&lt;/div&gt;


but something in the drupal site makes the select options and the input options disappear from the final page.
I had to add the form and form elements as a Form under the src/ directory and call it with 

 $form= \Drupal::formBuilder()-&gt;getForm('Drupal\pup_viewfiles\Form\PagerForm', $extra);