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                // 使用解構復值作為參數  並且預設沒傳值預設給予字串 
function Family({m = 'no person',w = 'no person', c = 'no child'} = {}){
  this.father = m;
  this.mother = w;
  this.chidren = c;

var data = {
  m: 'John Paul',
  w: 'Mary Alice',
  c: 'Chris Paul'

// 繼承 Family
var paul = new Family(data)
// 等同於 
// var paul[[Prototype]] = Family.prototype;
// paul 的 __proto__ 等於 Family();

// chidren: "Chris Paul"
// father: "John Paul"
// mother: "Mary Alice"
// 增加一個 hi function
Family.prototype.hi = function(){
  console.log(`Family's child is ${this.chidren}. Family's father is ${this.father}`);

// this 指向調用時的物件 paul
// I am Chris Paul. My father is John Paul