用于关闭重叠菜单的标签的事件监听器不起作用

Question

I have an overlay menu that I need to shut when clicking on the links. I have some event listeners but it doesn't work on the links. The menu event used on the burger icon works, the menuItems is for the links that doesn't work. I need it to also work with Pjax link

I have tried target the a tags like menuItems = document.querySelectorAll('.__overlay_nav_content_list_item a'); but it does not work.

 (function($) { "use strict"; var app = function() { var body = undefined; var menu = undefined; var menuItems = undefined; var init = function init() { body = document.querySelector('body'); menu = document.querySelector('.burger_menu_icon'); menuItems = document.querySelectorAll('.__overlay_nav_content_list_item'); applyListeners(); }; var applyListeners = function applyListeners() { menu.addEventListener('click', function() { return toggleClass(body, '__overlay_nav-active'); }); menuItems.addEventListener('click', function() { return toggleClass(body, '__overlay_nav-active'); }); }; var toggleClass = function toggleClass(element, stringClass) { if (element.classList.contains(stringClass)) element.classList.remove(stringClass); else element.classList.add(stringClass); }; init(); }(); })(jQuery); 

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> 

Answer 1

Have you checked event bubbling? If menuItems are descendants of menu, clicking the menu items will trigger menuItems.addEventListener('click', function() { and hence toggle the class, then the event will bubble up to menu and trigger menu.addEventListener('click', function() { , removing the class you just added. So the end result is that it looks like nothing changed.

If that is the issue, only use the click event on menu , or stop the bubbling up of the event of the menuItems by using event.stopPropagation() .

Although i would prefer only using the click event of the menu, first try: Keep in midn that querySelectorAll() returns a nodeList, so it's an arraylike object containing all the links, not a single link.

Array.from( menuItems ).forEach(function( menuItem ) {
  menuItem.addEventListener('click', function( event ) { // add event here so you have access to it!
    event.stopPropagation(); // call stopPropagation() first
    return toggleClass(body, '__overlay_nav-active'); // Once you return, the function stops.
  });
});

so we know that this is the problem or not. Do not forget to add event as the parameter for the event handler function.