JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="my-input"/>
<div id="a1"></div>
<span id="click-handler">Insert input value</span>

JavaScript

let clickHandler = document.getElementById("click-handler");

clickHandler.onclick = function() { 
  let a1 = document.getElementById('a1');
  let inputVal = document.getElementById('my-input').value;

  a1.appendChild(document.createTextNode(inputVal));
};