hash change js.html

// Put in head
// For adding class based on window hash
$(window).on('hashchange', function() {
  let hash = window.location.hash;
    $('a').removeClass('active');
    $('a[href=\"' + hash + '\"]').addClass('active');
});


// ... in the body
// Example how to apply
// Just put the target in the href
<ul class="first">
  <li><a href="#trigger11">Home</a></li>
  <li><a href="#trigger14">Infrastructure</a></li>
// ...
// Make the href 
</ul>