code: function(node) {
          this.node = node = $(node);
  
          var element = this.loadElement(node);
  
          this.fireEvent('showing', [element, node]);
  
          element.reveal();
  
          node
              .aria('toggled', true)
              .addClass('is-active');
  
          this.fireEvent('shown', [element, node]);
      }
docs: Open the target menu and apply active state to the node.
  
  @param {jQuery} node