JSFiddle - React, Tailwind, and code Playground

HTML

<div id="no">

</div>

JavaScript

function noDisplay() {
  if (document.cookie == "")
    document.cookie = "counter=0";
  else {
    cookies = document.cookie.split(";");
    for (cookie in cookies) {
      if (cookies[cookie].split('=')[0] == 'counter') {    	
        ctr = cookies[cookie].split('=')[1];
        alert(ctr);
        document.getElementById('no').innerHTML = ctr;
        document.cookie = "counter=" + (+ctr + 1);
        console.log(ctr);
      }
    }
  }
}
window.onload = function(){
    noDisplay()
};