function SuperType() {
  this.property = true;
}

SuperType.prototype.getSuperValue = function() {
  return this.property;
};

function SubType() {
  this.subproperty = false;
}

// 继承了SuperType
SubType.prototype = new SuperType();

SubType.prototype.getSubValue = function () {
  return this.subproperty;
};

var instance = new SubType();

console.log(instance.getSuperValue()); // true

function SuperType1() {
  this.colors = ['red', 'blue', 'green'];
}
function SubType1() {

}
SubType1.prototype = new SuperType1();
var instance1 = new SubType1();
instance1.colors.push('black');
console.log(instance1.colors); // [ 'red', 'blue', 'green', 'black' ]

var instance2 = new SubType1();
console.log(instance2.colors); // [ 'red', 'blue', 'green', 'black' ]

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

function SubType(name) {
  // 继承了SuperType，同时还传递了参数
  SuperType.call(this, name);

  // 实例属性
  this.age = 29;
}

var instance = new SubType('Bob');

console.log(instance.name); // Bob
console.log(instance.age); // 29

function SuperType(name) {
  this.name = name;
  this.colors = ['red', 'blue', 'green'];
}

SuperType.prototype.sayName = function() {
  console.log(this.name);
};

function SubType(name, age) {
  // 继承属性
  SuperType.call(this, name);

  this.age = age;
}
// 继承方法
SubType.prototype = new SuperType();
SubType.prototype.constructor = SubType;
SubType.prototype.sayAge = function() {
  console.log(this.age);
};

var instance1 = new SubType('Nicholas', 29);
instance1.colors.push('black');

console.log(instance1.colors); // [ 'red', 'blue', 'green', 'black' ]
instance1.sayName(); // Nicholas
instance1.sayAge(); // 29

var instance2 = new SubType('Greg', 27);

console.log(instance2.colors); // [ 'red', 'blue', 'green' ]
instance2.sayName(); // Greg
instance2.sayAge(); // 27

function object(o) {
  function F() {}
  F.prototype = o;
  return new F;
}

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() {
 console.log(this.name);
};

function SubType(name, age) {
  SuperType.call(this, name);

  this.age = age;
}

// 继承的关键
inheritPrototype(SubType, SuperType);

SubType.prototype.sayAge = function() {
  console.log(this.age);
};

var instance = new SubType('天涯', 23);
instance.sayName();
instance.sayAge();