How to write a simple NodeJs App that taks dump output to browser?

I familiar to NodeJs and just a little bit about web programming. One of my CLI Node app need to let user see the running program logs, I hope she can open a separated browser and point to something like http://localhost:12345, then she got live log keeping scrolling in the page without any human interaction. Is that a simple method to do such kind of application? I know programming RESTful, not sure if it helps.

Any suggestion will be highly appreciated! -woody