Hi,
not really sure what you want to achieve ? get the data from some sensor and display in web browser ? or trigger some relay on/off ?
if this is the case so check this out:
on Linux you can use SimpleHTTPServer and run it with
python -m SimpleHTTPServer 80 (no needs for node.js)
also you can check this one but this is not so advanced as rickkas7 example but you can test it and run even without any server
Best,
Arek