我自己總結(jié)的new操作流程
    1. 創(chuàng)建一個對象
     2.  Constructor 連接object 原型鏈
    3. Constructor的 this 指向調(diào)用的地方
    4. 返回對象
    代碼實(shí)現(xiàn):
   function objectFactory() {
    var obj = new Object(),

        Constructor = [].shift.call(arguments);

    obj.__proto__ = Constructor.prototype;

    var ret = Constructor.apply(obj, arguments);

    return typeof ret === 'object' ? ret : obj;
}


   var ret = Constructor.apply(obj, arguments); 
  /**
   * 解釋如下 如果這個函數(shù)直接了對象
   * 
   */
   function Otaku (name, age) {
      this.strength = 60;
      this.age = age;

      return {
          name: name,
          habit: 'Games'
      }
  }

  var person = new Otaku('Kevin', '18');

  console.log(person.name) // Kevin
  console.log(person.habit) // Games
  console.log(person.strength) // undefined
  console.log(person.age) // undefined