p5.js not working?

[bendavis78]

Seems like this should work: http://robotben.pencilcode.net/edit/p5test

background(255, 0, 0)

I get the error "background is not defined".

http://p5js.org/reference/#/p5/background

[bendavis78]

Actully, looks like you have to put it inside a draw() function, and it also needs to be defined on the window global (since coffeescript wraps everything in a closure).

window.draw = ->
  background(255, 0, 0)