JSFiddle - React, Tailwind, and code Playground

HTML

<div id="taxonomylist" style="width:200px; position:relative; float:left">
  <div class="item-list"><ul><li class="first"><a href="/?q=category/activity/aaas" class="views-processed">AAAS</a></li>
<li><a href="/?q=category/activity/science-gles" class="views-processed">Science GLE's</a></li>
<li>&nbsp;&nbsp;&nbsp;<a href="/?q=category/activity/science-gles/sa" class="views-processed">SA</a></li>
<li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="/?q=category/activity/science-gles/sa/11" class="views-processed">1.1</a></li>
<li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="/?q=category/activity/science-gles/sa/11/grade-3" class="views-processed">Grade 3</a></li>
<li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="/?q=category/activity/science-gles/sa/11/grade-4" class="views-processed">Grade 4</a></li>
<li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="/?q=category/activity/science-gles/sa/11/grade-5" class="views-processed">Grade 5</a></li>
<li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="/?q=category/activity/science-gles/sa/11/grade-6" class="views-processed">Grade 6</a></li>
<li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="/?q=category/activity/science-gles/sa/11/grade-7" class="views-processed">Grade 7</a></li>
<li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="/?q=category/activity/science-gles/sa/11/grade-8" class="views-processed">Grade 8</a></li>
<li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="/?q=category/activity/science-gles/sa/12" class="views-processed">1.2</a></li>
<li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="/?q=category/activity/science-gles/sa/12/grade-3" class="views-processed">Grade 3</a></li>
<li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="/?q=category/activity/science-gles/sa/12/grade-4" class="views-processed">Grade 4</a></li>
<li>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a...

JavaScript

$('#taxonomylist ul li').each(function() {
    $href = $("a", this).attr("href");
    if (!$href.match(/^.*\/activity\/.*[a-zA-Z]$/i)) {
        $(this).hide();
    }
});