javascript - CoffeeScript 类 - 遍历继承对象的数组

Question

我有以下 CoffeeScript :

class Vehicles
  constructor: (@name) ->

class Car extends Vehicles
  setId: (@id) ->
  setName: (@name) ->

class Truck extends Vehicles
  setId: (@id) ->
  setName: (@name) ->

m3 = new Car
m3.setId 2
m3.setName 'BMW M3'

m5 = new Car
m5.setId 4
m5.setName 'BMW M5'

“汽车”对象将从数据数组中动态生成。

在 Vehicles 类中，我将如何遍历所有 Car 对象并访问每个单独的属性？

谢谢!

Answer 1

与 Ruby 不同，CoffeeScript 在您实例化类时不运行任何幕后代码；您需要使用 Car 构造函数添加您正在谈论的功能。因此，例如，要将所有汽车的列表维护为 Vehicles.cars，您可以这样写:

class Vehicles
  @cars = []
  constructor: (@name) ->

class Car extends Vehicles
  constructor: ->
    Vehicles.cars.push @
  setId: (@id) ->
  setName: (@name) ->

遍历它们并显示它们的所有属性:

console.log(car.id, car.name) for car in Vehicles.cars