HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Parse + setTime</title>
</head>
<body>
  <h1>ISO timestamp</h1>
  <pre id="out"></pre>
  <script>
    var iso = "2026-06-15T09:30:00.000Z";
    var ms = Date.parse(iso);
    var date = new Date();
    date.setTime(ms);
    document.getElementById("out").textContent =
      "ISO: " + date.toISOString() + "\n" +
      "Bad parse is NaN: " + Number.isNaN(Date.parse("not-a-date"));
  </script>
</body>
</html>

Lines: 0 | Characters: 0

Live Preview Auto-refresh on Run

JavaScript Date setTime() — from parse (Try It)