JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li>20</li>
    <li>10</li>
    <li>5</li>
    <li>3</li>
    <li>32</li>
    <li>25</li>
    <li>6</li>
    <li>12</li>
    <li>8</li>
</ul>

JavaScript

$(function () {
    var liContents = [];
    $('ul li').each (function () {
        liContents.push(parseInt($(this).text(), 10));
    });

    liContents.sort(numOrdDesc);

    $('ul li').each (function () {
        $(this).text(liContents.pop());
    });
});

function numOrdDesc(a, b){ return (b-a); }