If you are able, please checkout and run this before the meetup.
An example application that uses akka-http backend and a scala.js with japgolly's react wrapper frontend to implement a simple trading application.
To run:
sbt
> project backend
> re-start
Navigate to http://localhost:8080/.
During the meetup we will mostly use code from https://github.com/japgolly/scalajs-react/blob/master/doc/USAGE.md