store(credentials)

// Check if the browser supports password credentials (and the Credential Management API)
if ("PasswordCredential" in window) {
  let credential = new PasswordCredential({
    id: "example-username",
    name: "Carina Anand", // In case of a login, the name comes from the server.
    password: "correct horse battery staple",
  });

  navigator.credentials.store(credential).then(
    () => {
      console.info("Credential stored in the user agent's credential manager.");
    },
    (err) => {
      console.error("Error while storing the credential: ", err);
    },
  );
}