Search notes:

window.PublicKeyCredential

<!DOCTYPE html>
<html>
<head>
  <meta content="text/html;charset=utf-8" http-equiv="Content-Type">
  <title>window.PublicKeyCredential</title>

<script>

function main() {
   if (! window.PublicKeyCredential) {
     alert('The browser does not support WebAuthn');
     return;
   }

// let cred = navigator.credentials.create(…);
}

</script>

</head>
<body onload='main()'>

</body>
</html>

Github repository Browser-Object-Model, path: /window/PublicKeyCredential.html

window.PublicKeyCredential

See also