JSFiddle - React, Tailwind, and code Playground

HTML

<div id="first">first</div>
<div id="last">last</div>

CSS

span {color: red;}

JavaScript

function swap(a, b, direction) {
    a[direction](b);
}
        
var firstElem  = $('#first'),
    secondElem = $('#last');

swap(firstElem, secondElem, 'before');