JAVASCRIPT

materialize dropdown js

document.addEventListener('DOMContentLoaded', function() {
    var elems = document.querySelectorAll('.dropdown-trigger');
    var instances = M.Dropdown.init(elems, options);
  });

  // Or with jQuery

  $('.dropdown-trigger').dropdown();

materialize dropdown

<!-- Dropdown Trigger -->
  <a class='dropdown-trigger btn' href='#' data-target='dropdown1'>Drop Me!</a>

  <!-- Dropdown Structure -->
  <ul id='dropdown1' class='dropdown-content'>
    <li><a href="#!">one</a></li>
    <li><a href="#!">two</a></li>
    <li class="divider" tabindex="-1"></li>
    <li><a href="#!">three</a></li>
    <li><a href="#!"><i class="material-icons">view_module</i>four</a></li>
    <li><a href="#!"><i class="material-icons">cloud</i>five</a></li>
  </ul>