JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="menu">
      <li><a href="#">Home</a></li>
      <li><a href="#">Manage Customer</a>
          <ul>
            <li><a href="#">Customer List</a></li>
            <li><a href="#">Customer Detail</a></li>
          </ul>
      </li>
    </ul>

JavaScript

$('#menu > li > a').not(':only-child').css('color', 'orange');