troubleshooting Question

How is classList being used in this codepen?

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dlearman1Flag for United States of America asked on
CSSHTMLJavaScript
3 Comments1 Solution7 ViewsLast Modified:
I'm trying to understand the logic in this codepen https://codepen.io/tutsplus/pen/bGVPVrYand I'm confused by how classList is being used to add/remove the active class.
  1. variable menu is defined by const menu = document.querySelector(".menu");
  2.  In HTML, class .menu is applied to the top ul element
  3.  It seems to me that the code menu.classList.add("active"); is adding the class "active" to the ul element
  4. But in the codepen CSS, it appears to be added to <li class="item"> a child of menu.
I believe the ul element cannot be show/hide toggled directly, because it needs to remain displayed for non-mobile windows. I don't see that classList will recursively search children.

The codepen works so I'm missing something.
    
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