JSFiddle - React, Tailwind, and code Playground

HTML

<div>
Replace this content
</div>

<h2>Use this label</h2>
<h2>Use this label</h2>
<h2>Use this label</h2>

JavaScript

let element = document.querySelector('div');
let another = document.querySelector('h2');
  
element.replaceWith(another);