couple of tips: jquery's $() is aliased to j() in ruby. Try: j('body').css background: 'pink' window is alias to w(). E.g.: w.alert('hello from ruby') puts

couple of tips: jquery's $() is aliased to j() in ruby. Try: j('body').css background: 'pink' window is alias to w(). E.g.: w.alert('hello from ruby') puts w.prompt('saywhat?')