HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>stop() — timed</title>
</head>
<body>
  <h1>Stop after 2 seconds</h1>
  <p>
    <button type="button" id="start">Start load + timer</button>
  </p>
  <pre id="out">Click Start</pre>
  <p id="gallery"></p>
  <script>
    (function () {
      var out = document.getElementById("out");
      var gallery = document.getElementById("gallery");

      document.getElementById("start").onclick = function () {
        gallery.textContent = "";
        out.textContent = "Loading… will stop in 2s";
        var bust = Date.now();
        var i;
        for (i = 0; i < 8; i++) {
          var img = document.createElement("img");
          img.alt = "Img " + (i + 1);
          img.width = 180;
          img.height = 100;
          img.src = "https://picsum.photos/seed/" + (bust + i) + "/180/100";
          gallery.appendChild(img);
          gallery.appendChild(document.createElement("br"));
        }
        setTimeout(function () {
          window.stop();
          out.textContent = "Stopped after timeout";
        }, 2000);
      };
    })();
  </script>
</body>
</html>

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JavaScript Window stop() — timed stop (Try It)