<div class="custom-categories">
 {% if not simple_list_page %}
 {% set my_posts = blog_recent_posts('group.id', limit=4) %}
 {% set my_topics = blog_topics('group.id', 8) %} 
 <ul>
<li class="tab-all"> 
 <a href="{{ group.absolute_url }}">All</a>
</li>
{% for item in my_topics %} 
<li><a href="{{ blog_tag_url(group.id, item.slug) }}">{{ item }}</a></li> 
{% endfor %} 
 </ul>   
 {% endif %}
</div>


$(function(){
 var value1 = window.location.href.substring(window.location.href.lastIndexOf('/') + 1); 
 $('.custom-categories ul li a').each(function(){
   var url = $(this).attr('href');
   var lastSegment = url.split('/').pop();
   if (lastSegment == value1) {
     $(this).parent().addClass('active'); 
     $(this).parent().siblings().removeClass('active');
   }
 }); 
});  


//================= topics with active in label

      <div class="dropdown">
        <label class="dropdown__label">
          <span>
            Filter </span>
          <i class="fas fa-arrow-down"></i>
        </label>
        <div class="custom-categories">
          {% if not simple_list_page %}

          {% set my_topics = blog_topics('group.id', 8) %} 
          <ul>
            {% for item in my_topics %} 
            <li><a href="{{ blog_tag_url(group.id, item.slug) }}">{{ item }}</a></li> 
            {% endfor %} 
          </ul>   
          {% endif %}
        </div>

      </div>

//====================== Js

$(function () {
  var value1 = window.location.href.substring(window.location.href.lastIndexOf('/') + 1);
  $('.custom-categories ul li a').each(function () {
    var url = $(this).attr('href');
    var lastSegment = url.split('/').pop();
    if (lastSegment == value1) {
      if( $(this).html() == 'All' ){
        $('.dropdown__label span').html('Filter');
      } else {
        $('.dropdown__label span').html($(this).html());
      }

    }
  });
});