AuthenticatorAttestationResponse: getAuthenticatorData() method

{{APIRef("Web Authentication API")}}{{securecontext_header}}

The getAuthenticatorData() method of the {{domxref("AuthenticatorAttestationResponse")}} interface returns an {{jsxref("ArrayBuffer")}} containing the authenticator data contained within the {{domxref("AuthenticatorAttestationResponse.attestationObject")}} property.

This is a convenience function, created to allow easy access to the authenticator data without having to write extra parsing code to extract it from the attestationObject.

Syntax

getAuthenticatorData()

Parameters

None.

Return value

An {{jsxref("ArrayBuffer")}} with a {{jsxref("ArrayBuffer.byteLength", "byteLength")}} of at least 37 bytes, which contains the data structure explained in Authenticator data.

This will be equivalent to the authenticator data contained within the {{domxref("AuthenticatorAttestationResponse.attestationObject")}} property.

Examples

See Creating a public key credential for a detailed example.

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}