text: // https://blog.csdn.net/ligang2585116/article/details/53522741
  function Person(name) {
    this.name = name;
  }
  Person.prototype = {
    construtor: Person,
    sayName: function() {
      console.log("my name is " + this.name);
    }
  }
  
  var p1 = new Person('ligang');
  var p2 = new Person('Camile');
  p1.sayName();
  p2.sayName();
  
  console.log(p1.__proto__ === Person.prototype);