You can find an easy way to set up a local server here:
(Just noticed that my page still contains the old link. I will update it. )
But the rest should be right. Try it out.
See * discourse.threejs.hofk.de at bottom: Local use of the examples
https://hofk.de/main/discourse.threejs/Local%20use%20of%20the%20examples.pdf
from the Collection of examples from discourse.threejs.org
UPDATE: Reference to the original documentation updated.