I've begun to create the associated web site where you can see the live examples running & learn more about the book.
See: https://makegameswithjs.com
Right now the site is very basic, but more will be coming soon.
You may need an http server to run the exmamples and here is one that's really easy to use (if you already have node / npm): https://www.npmjs.com/package/http-server
- install it globally - (so you can run it from anywhere on your system): npm install --global http-server
- run it on the port you want: http-server -p http-server -p 5500