Adding New Elements in commands

commands:{
			{
            id:   'sub_menu_item',
            run: function(editor, senderBtn){
                
                const comp = editor.getSelected();
                comp.view.el.querySelector('[data-js=submenu_container]').innerHTML += '<a class="navbar-menu-link">Sub Menu Item</a>';

            },
          },
	}

This can add **Sub Menu Item**  to the container. But I am unable to select it. I tried with AppendChild also. But the result is same. I should be able to edit the newly added component. Pls help me