JSFiddle - React, Tailwind, and code Playground

HTML

<div id="test">
  <b> <var> Test </ var> </b>
</div>

<button onclick="changeIt()" id="button">Press If you are here</button>

JavaScript

var sum = 0;
  var pressYet = localStorage.getItem('pressYet');

  function changeIt() {
    if (pressYet == null) {
      sum++;
      document.getElementById('test').innerHTML = sum;
      pressYet = true;
      localStorage.setItem('pressYet', pressYet);
    } else {

      document.getElementById('test').innerHTML = "You have already pressed the button";
      document.getElementById("button").style.visibility = "hidden";
    }

  }