What language is Khan Academy CS using?

Question

My son is playing around with Khan Academy's Computer Science and learning lots.

The application is running on JavaScript in the browser but the language doesn't quite conform to JavaScript conventions. e.g. random(low, high) rather than JavaScript's Math.random()

Does anyone know exactly what language they're using?

Is there any more complete documentation other than what's on the site link as this looks like an incomplete list of functions and methods.

Answer 1

I believe they just wrap it up and develop their own functions beneath which is the JavaScript.

as stated:

All of the code in the Khan Academy Computer Science platform is written using JavaScript and Processing.js.

https://www.khanacademy.org/cs/docs