title: javascript api to store authentication token on a third party domain
body: <p>We have our JS on third party website that authenticates with the server (cross domain). What is the best way to store Auth token.</p>
  
  <ol>
  <li>We are thinking to create a Iframe and store token on that domain resource? Is this the best way? (Any examples on how to do this?)</li>
  </ol>
  
  <p>Any other suggestions would be appreciated.</p>
  
  <p>kind regards,
  Phani.</p>