HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>scripts live</title>
</head>
<body>
  <pre id="out"></pre>
  <script>
    var before = document.scripts.length;
    var extra = document.createElement("script");
    extra.textContent = "console.log('added');";
    document.body.appendChild(extra);
    var after = document.scripts.length;
    document.getElementById("out").textContent =
      "before: " + before + ", after: " + after;
  </script>
</body>
</html>

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