title: Setting authorization header in Fetch API
body: <p>I have a Node/Express backend and I'm consuming the API with a React Client. I want to be able to set the authorization header after a user is signed up. This ensures that subsequent requests are sent with the authorization header. </p>
  
  <p>I can see how it's done in Axios <a href="https://stackoverflow.com/questions/43014034/setting-authorization-header-in-axios">here</a> and how to retrieve the authorization header in Fetch <a href="https://stackoverflow.com/questions/44747874/with-a-fetch-api-sending-typemultipart-form-data-how-to-send-an-authorization">here</a></p>
  
  <p>Is it possible to do this with Fetch API and how?</p>
  
  <p><strong>Thank you in advance.</strong></p>