JavaScript継承の使用例を詳しく解説：プロトタイプ継承、寄生継承、寄生複合継承

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

/* 原型式继承 */
function object(o) {
  function F() {}
  F.prototype = o;
  return new F();
}

var person = {
  name : 'wuyuchang',
  friends : ['wyc', 'Nicholas', 'Tim']
}

var anotherPerson = object(person);
anotherPerson.name = 'Greg';
anotherPerson.friends.push('Bob');

var anotherPerson2 = object(person);
anotherPerson2.name = 'Jack';
anotherPerson2.friends.push('Rose');

alert(person.friends);  // wyc,Nicholas,Tim,Bob,Rose

/* 寄生式继承 */
function createAnother(original) {
  var clone = object(original);
  clone.sayHi = function() {
    alert('hi');
  }
  return clone;
}

/* 原型式继承 */
function object(o) {
  function F() {}
  F.prototype = o;
  return new F();
}
   
/* 寄生式继承 */
function createAnother(original) {
  var clone = object(original);
  clone.sayHi = function() {
    alert('hi');
  }
  return clone;
}

var person = {
  name : 'wuyuchang',
  friends : ['wyc', 'Nicholas', 'Rose']
}
var anotherPerson = createAnother(person);
anotherPerson.sayHi();

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

/* 寄生组合式继承 */
function inheritPrototype(subType, superType) {
  var prototype = object(superType.prototype);
  prototype.constructor = subType;
  subType.prototype = prototype;
}