HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>permissions — helper</title>
</head>
<body>
  <button id="btn" type="button">Query geolocation</button>
  <pre id="out">Click Query geolocation</pre>
  <script>
    async function queryPermission(name) {
      if (!navigator.permissions || !navigator.permissions.query) {
        return { ok: false, reason: "api-missing" };
      }
      try {
        var status = await navigator.permissions.query({ name: name });
        return { ok: true, name: name, state: status.state };
      } catch (err) {
        return {
          ok: false,
          reason: "query-failed",
          message: String(err && err.message ? err.message : err)
        };
      }
    }
    document.getElementById("btn").addEventListener("click", function () {
      queryPermission("geolocation").then(function (info) {
        document.getElementById("out").textContent = JSON.stringify(info);
      });
    });
  </script>
</body>
</html>

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permissions — safe query helper (Try It)