HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Calendar month number</title>
</head>
<body>
  <h1>Human month</h1>
  <pre id="out"></pre>
  <script>
    var date = new Date(2026, 1, 15);
    var monthNumber = date.getMonth() + 1;
    document.getElementById("out").textContent =
      "Calendar month: " + monthNumber;
  </script>
</body>
</html>

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JavaScript Date getMonth() — human month (Try It)