HTML Code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="utf-8">

  <title>stop() — iframe</title>

  <style>

    body { font-family: system-ui, sans-serif; padding: 1rem; }

    iframe { width: 100%; height: 200px; border: 1px solid #ccc; }

  </style>

</head>

<body>

  <button type="button" id="stopFrameBtn">Stop iframe loading</button>

  <button type="button" id="reloadBtn">Reload iframe</button>

  <p id="status">iframe loading a slow page…</p>

  <iframe id="preview" title="Preview" src="https://httpbin.org/delay/8"></iframe>

  <script>

    var frame = document.getElementById("preview");

    var status = document.getElementById("status");



    document.getElementById("stopFrameBtn").onclick = function () {

      try {

        frame.contentWindow.stop();

        status.textContent = "iframe loading stopped.";

      } catch (e) {

        status.textContent = "Could not access iframe (cross-origin).";

      }

    };



    document.getElementById("reloadBtn").onclick = function () {

      frame.src = "https://httpbin.org/delay/8?" + Date.now();

      status.textContent = "iframe reloading…";

    };

  </script>

</body>

</html>

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JavaScript stop() — stop iframe load (Try It)