Does the Live Demo run on your server?

[ghost]

Or I'm pretty much downloaded it and running it locally on my web browser, just like running Java Applets or Flash?

[SpartanJ]

It's running on the client (as always actually, not even what is normally called server-side rendering is server side... rendering, it's just updating the DOM from the server to the client, but the rendering happens on the client side).

[ghost]

So it still need to connect to the server to work? Can it work if I disconnect from the internet after it was fully loaded on my web browser?

[SpartanJ]

 So it still need to connect to the server to work?

No.

 Can it work if I disconnect from the internet after it was fully loaded on my web browser?

Yes, no problem, you could also download the assets and run it locally.