JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="menu">
    <li id="menu-item-1">Menu One</li>
    <li id="menu-item-2">Menu Two</li>
    <li id="menu-item-3">Menu Three</li>
</ul>

JavaScript

$(document).ready(function() {
   
    var html = '<li id="menu-item-0">Menu Zero</li>';
    $('#menu').prepend(html);
    
});