A new article is available that explores the
the various options that you have when using it.
It only talks about the
functional style of object-oriented programming and does not explain the new
classes that are now available.
How does this apply to RGraph?
In order to keep compatibility with older browsers that may not support newer
features (ie the newer syntax for defining classes) all of the RGraph objects are defined
using this style of object definition.
So understanding how
and used will help you when you're working with RGraph.