Mobile menu toggle not working in Shopify theme

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1

Hey everyone! I’m new to Shopify theme dev and I’ve hit a snag. My mobile dropdown menu opens fine but won’t close when tapped again. Weird thing is, it works perfectly in my local setup with Shopify CLI. But once I push it live, it gets stuck open on mobile.

I’ve tried debugging but I’m stumped. Here’s a simplified version of my code:

<nav class="mobile-menu">
  <button class="menu-toggle">Menu</button>
  <ul class="menu-items">
    {% for link in linklists.main-menu.links %}
      <li>
        <a href="{{ link.url }}">{{ link.title }}</a>
        {% if link.links != blank %}
          <ul class="submenu">
            {% for sublink in link.links %}
              <li><a href="{{ sublink.url }}">{{ sublink.title }}</a></li>
            {% endfor %}
          </ul>
        {% endif %}
      </li>
    {% endfor %}
  </ul>
</nav>

document.querySelector('.menu-toggle').addEventListener('click', function() {
  document.querySelector('.menu-items').classList.toggle('active');
});

Any ideas what could be causing this? Thanks in advance for any help!

2

I’ve run into this exact problem before, and it can be super frustrating. One thing that helped me was checking for any CSS conflicts. Sometimes, especially on mobile, certain styles can interfere with the JavaScript toggle functionality.

Try adding !important to your .active class styles, like this:

.menu-items.active {
display: block !important;
}

Also, double-check that your JavaScript file is loading after your DOM content. If it’s in the head, try moving it to just before the closing tag.

Lastly, make sure there are no other scripts or theme features that might be hijacking your click events. Shopify themes can sometimes have unexpected interactions between different components. Good luck sorting it out!

3

hey alexj, sounds like a tricky one! have u checked if theres any javascript errors in the console when its live? sometimes cdn issues or other scripts can interfere. also, try adding a console.log in ur click event to see if its firing properly. good luck mate!

4

I encountered a similar issue with a Shopify theme recently. The problem might be related to event delegation. Since Shopify dynamically loads content, the event listener may not be attaching properly on the live site.

Try modifying your JavaScript to use event delegation:

document.addEventListener('click', function(event) {
  if (event.target.matches('.menu-toggle')) {
    document.querySelector('.menu-items').classList.toggle('active');
  }
});

This approach listens for clicks on the entire document and checks if the clicked element matches the selector. It should work even if elements are dynamically added or modified.

Also, ensure your JavaScript file is being loaded correctly on the live site. Check the network tab in your browser’s developer tools to confirm it’s not being blocked or failing to load.