I have the following:

function Preferences() {
}
Preferences.players = {
  'player1': new Player()
}

players is a static member variable of Preferences and I'm trying to make it an object containing an instance of a Player. However, it doesn't appear to let me do this. It seems like it will allow me to define players if I make it a non-static member variable however. Like so:

function Preferences() {
  var players = {
    'player1' : new Player()
  }
}

Is it possible to create a static member variable containing instances of an object in JS?