title: React.JS react-create-app backend same port
body: <p>I am new to React.JS and using react-create-app to setup the project.</p>
  
  <p>I am wondering is there a way to use the same host and port to response for API requests, (the server serves both front-end and back-end, like in Django).</p>
  
  <p>The doc mentions about this but does not go into details.</p>
  
  <p>By same host and port I mean I only need one terminal and run npm start once.</p>