js继承代码学习

寄生组合式继承是除了class继承外，最好的继承方法，当然也很麻烦。

function inheritPrototype(subType,superType){

  var prototype = object(superType.prototype);

  prototype.constructor = subType;

  subType.prototype = prototype;

}

function SuperType(name){

  this.name = name;

  this.colors = ["red","blue","green"];

}

SuperType.prototype.sayName = function(){

  alert(this.name);

}

function SubType(name,age){

  SuperType.call(this,name);

  this.age = age;

}

inheritPrototype(SubType,SuperType);

SubType.prototype.sayAge = function(){

  alert(this.age);

}

function object(o){
  function A(){}
  A.prototype = o
  var ox = new A()
  return ox
}

console.log(new SubType())