jquery declarative named scope

example.coffee

$.fn.declare.add
  'set.color': (color) -> @css({'color':color})
  'set.bgcolor': (color) -> @css({'background-color':color})

$("div").declare('set.color','green').declare('set.bgcolor','red')

scope.coffee

#
#  an example of named scope like in activerecord
#  implemented for jquery
#
#

do ->
  scopes_cache={}
  fn= (scope,args...) -> scopes_cache[scope].apply(this,args)
  fn.add= (scopes) -> scopes_cache[scope]=fn for scope,fn of    scopes
  fn.remove= (scope) -> delete scopes_cache[scope]

  jQuery.fn.declare=fn