调用coffescript超级方法

Question

我有以下代码：

class Animal 
     constructor: (@name) -> 
     say:() -> console.log "Hello from animal called #{ @name }" 

    class Dog extends Animal 

     say:() -> 
      super.say() 
      console.log "Hello from dog called #{ @name }" 

    a = new Animal('Bobby') 
    a.say() 

    d = new Dog("Duffy") 
    d.say()    

结果不

Hello from animal called Bobby 
Hello from animal called Duffy 
Hello from dog called Duffy 

，但我得到了以下错误：

Hello from animal called Bobby 
Hello from animal called Duffy 
Uncaught TypeError: Cannot call method 'say' of undefined 

为什么超级未定义？如何调用父级方法以扩展它？由于

Answer 1

，我发现自己的答案，它应该是：

class Dog extends Animal 

    say:() -> 
     super 
     console.log "Hello from dog called #{ @name }"