JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li><a href="#">A</a>

    </li>
    <li><a href="#">B</a>

    </li>
    <li><a href="#">C</a>

    </li>
</ul>

JavaScript

$('ul').menu().append('<li><a href="#"><span class="ui-icon ui-icon-comment"></span>D</a></li>').menu('refresh');