JSFiddle - React, Tailwind, and code Playground

by maitrungduc1410

HTML

<!DOCTYPE html>
<body>
  <h1 id="count">Count: 0</h1>
  <button onclick="start()">Start</button>

  <div id="progress"></div>

  <script>
    let count = 0;
    setInterval(() => {
      document.getElementById("count").innerHTML = `Count: ${++count}`;
    }, 1000);
    function start() {
      console.log("start");
      function count() {
        for (let i = 1; i <= 5e6; i++) {
          progress.innerHTML = i;
        }
      }

      count();
    }
  </script>
</body>