JSFiddle - React, Tailwind, and code Playground

HTML

<ul class="menu">
    <li class="section">
         <ul class="items"><li>UL selected</li></ul>
        <span class="show">ABC</span>
        <ul class="items"><li>UL selected</li></ul>
    </li>
     <li class="section">
        <span class="">DEF</span>
        <ul class="items"><li>UL not selected</li></ul>
    </li>
</ul>

JavaScript

$("ul li.section:has(span.show) ul.items li").css("color", "red");