JS OOP Layer 4 , super const and sub const

gistfile1.txt

function Person(name){
  this.name = name;
}

Person.prototype.say = function(){
  console.log("hi");
}

function CTO(){
  Person.call(this,"dd")
}

CTO.protortype = Object.create(Person.prototype);
CTO.prototype.say = function(){
  Person.prototype.say.call(this);
  console.log("CTO !")
}
var m = new CTO();
m.say();
console.log(m.name);