Enable Dropdown Navigation

dropdown.js

;
(function ($) {
  

  // DOM ready
  $(function () {

    // Toggle open and close nav styles on click
    $('#nav-toggle').click(function () {
      $('.nav-list').toggle();
    });
    // Toggle active CSS class (X - close)
    document.querySelector("#nav-toggle").addEventListener("click", function () {
      this.classList.toggle("active");
    });
    // If a link has a dropdown, add sub menu toggle.
    $('nav ul li > a:not(:only-child)').click(function (e) {
      $(this).siblings('.nav-dropdown').toggle();
      // Close one dropdown when selecting another
      $('.nav-dropdown').not($(this).siblings()).hide();
    e.stopPropagation();
    }); 
    // Clicking away from dropdown will remove the dropdown class
  $('html').click(function(){
      $('.nav-dropdown').hide();
  });
    
  });

})(jQuery);