working CoffeeScript class member bind

working_member_bind.coffee

class GameOfLife

#rest of class omitted 
#see http://github.com/victusfate/life

	update: (playpause=1) ->
		#jk dual flip flop flashback
		if playpause == @playpause
			@playpause = 0
			clearTimeout @time_out_id if @time_out_id 
		else
			@playpause = 1

		# guts of method omitted			
		if @playpause > 0
			@time_out_id = setTimeout( =>
				@update(2)
				500)
		return
window.GameOfLife = GameOfLife

working_member_bind.js

var GameOfLife;
var __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };
GameOfLife = (function() {
  function GameOfLife() {}
  GameOfLife.prototype.update = function(playpause) {
    if (playpause == null) {
      playpause = 1;
    }
    if (playpause === this.playpause) {
      this.playpause = 0;
      if (this.time_out_id ) {
        clearTimeout(this.time_out_id);
      }
    } else {
      this.playpause = 1;
    }
    if (this.playpause > 0) {
      this.time_out_id = setTimeout(__bind(function() {
        this.update(2);
        return 500;
      }, this));
    }
  };
  return GameOfLife;
})();
window.GameOfLife = GameOfLife;