JSFiddle - React, Tailwind, and code Playground

HTML

<form>
   
    <input type="button" value="Show">
</form>

JavaScript

document.querySelector("form").addEventListener("click", function(e) {
    e.preventDefault();
    
    var fullWidth = window.innerWidth;
    var fullHeight = window.innerHeight;
    
    var text = getRandomWord();
    
    var elem = document.createElement("div");
    elem.textContent = text;
    elem.style.position = "absolute";
    elem.style.left = Math.round(Math.random() * fullWidth) + "px";
    elem.style.top = Math.round(Math.random() * fullHeight) + "px";
    document.body.appendChild(elem);
});

function getRandomWord(){
  var words = [
    'Hello',
    'No',
    'Hi',
    'Banana',
    'Apple'
  ];
  
  return words[Math.floor(Math.random() * words.length)];
}