JSFiddle - React, Tailwind, and code Playground

HTML

<h3 id="open">Your Restaurants</h3>
<ul class="tabs">
    <li id="order_open" class="rgreen">
        <a>New restaurant</a> 
    </li>   
</ul>

JavaScript

$(document).ready(function(){
     $('#order_open').click(function(){
         var $newRestaurant = '<li id="order_open">New restaurant<a href="Menu.php";></a></li>';
         $(this).before($newRestaurant);
     });
});