JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <button id="download">DOWNLOAD</button>
  <span class="text-small">
    (<span id="result"></span> Downloads)
  </span>
</div>

CSS

.text-small { font: 11px/1.4 sans-serif; }

JavaScript

function clickCounter() {
  // Read fron localstorage or fallback to 0
  document.getElementById("result").innerHTML =  localStorage.clickcount || 0;
}

document.getElementById("download").addEventListener("click", function() {
  localStorage.clickcount = Number(localStorage.clickcount) + 1;
  clickCounter(); // Do on click
});

clickCounter();   // and on DOM ready