JSFiddle - React, Tailwind, and code Playground

HTML

<div id="src">
    <p id="kenshiro">hello</p>
    <div id="raoh">world</div>
</div>
<hr />
<div id="dest"></div>

JavaScript

var src = document.getElementById("src");
var dest = document.getElementById("kenshiro");
var raoh = document.getElementById("raoh");

var df = document.createDocumentFragment();
var e;
src.insertBefore(dest, kenshiro);