Hi randy70,
For me, rexrainbow's CSV plugin works *like a charm* - I've been using it for over a year to load the kind of data you've mentioned, and I'm not gonna look anywhere else ;-). [Thank you, @rexrainbow !]
This + ajax gives me a huge flexibility - all configuration in external data files, whether over the web or in nodewebkit.
Take a look at the examples that you can find on rexrainbow's pages - this should give you a headstart.
Good luck,
Greg