JSFiddle - React, Tailwind, and code Playground

HTML

<div data-order="3">3</div>
<div data-order="7">7</div>
<div data-order="1">1</div>

JavaScript

var elems = $('div');

elems.sort(function(a, b) {
    return a.getAttribute('data-order') > b.getAttribute('data-order')
}).appendTo(elems.parent());