JSFiddle - React, Tailwind, and code Playground

HTML

<div id="huita">Huita</div>
<button id="huitaChanger">Change</button>

JavaScript

var huita = document.getElementById("huita");
var changer = document.getElementById("huitaChanger");
changer.onclick = function() {changeHuita(huita)};
huita.addEventListener ('DOMNodeInserted', alarmIfHuitaChanged, false);


function changeHuita(huita) {
    huita.innerHTML = "Ne huita";
}

function alarmIfHuitaChanged() {
    alert("HALP! THEY CHANGED MY HUITA OMG!!1");
}