Handling Unsupported Browsers

The provided webauthn.js file detects whether browsers support WebAuthn, and if not, displays or hides selected element IDs as appropriate. There are matching element IDs in the bundled templates, which can be useful as a guide for how to handle this in customized templates.

Elements with ID webauthn-feature will be set to style="display: none". This is for hiding functional elements that require WebAuthn support, since using those elements in an unsupported browser would only result in errors.

Elements with ID webauthn-undefined-error will be set to style="display: block". This is useful for displaying a warning in unsupported browsers, along with a link to a list of compatible browsers.