Thanks for writing this blog.
I had some annoying typos due to ` instead of ‘ and ”.

so made this git repo with your code.

aspiringguru/chatbot_demo_Rivescript

Weirdly, I could not set focus on the input box or update the content of the input box using innerHTML. Must be something trivial but threw me and I need to move on.

Not sure if I’m missing the potential of RiveScript, it seems limited compared to other options.