JSFiddle - React, Tailwind, and code Playground

HTML

<button type="button" id="submit">
Click me! 
</button>
<H1 id="content">Hello</H1>

JavaScript

var buttonClick = document.getElementById('submit');
var h1Content = document.getElementById('content').innerHTML;
buttonClick.onclick = function() {
     if (h1Content != "") {
     h1Content = "";
     }
}