javascript - 在其他类之间共享两个实例

Question

我有 4 个 Coffeescript 类，如下所示:

class Main
  constructor: (element) ->
    @element = $(element)
    @one = new One()
    @two = new Two(@one)
    @dummy = new Dummy(@one, @two)

class One
  constructor: (class_two_instance) ->
    # do something

class Two
  constructor: (class_one_instance) ->
    # do something

class Dummy
  constructor: (class_one_instance, class_two_instance)
    # do something
jQuery ->
  new Main($("#main"))

我需要类 One 和类 Two 在所有其他(实际或 future )类之间共享。

我开始做的是将它们作为参数传递，正如您在 Main 类中看到的那样

@dummy = new Dummy(@one, @two)

但是对于One类，我只需要传递@two。对于类 Two 也是如此，我只需要传递 @one

不幸的是，正如您所看到的，似乎不可能同时做到这一点(我无法将 @two 作为 new One() 的参数传递):

@one = new One()
@two = new Two(@one)

有办法解决吗？

Answer 1

在我看来，one 和 two 根本不应该是类，而只是单个对象:

one = {
  data: "I'm one",
  method: () ->
    # do something
    # if needed, you can use two here
}
two = {
  data: "I'm two",
  method: () ->
    # do something else
    # if needed, you can use one here
}
class Main
  constructor: (element) ->
    @element = $(element)
    @dummy = new Dummy()
    # if needed, you can use one and two here

class Dummy
  constructor: () ->
    # do something
    # if needed, you can use one and two here

jQuery ->
  new Main($("#main"))