临时笔记

OOP：

1.1特性：继承、封装、多态、抽象

1.2获取对象原型 Object.getPrototypeOf(obj)

//构造类Person
function Person(name,age){
  this.name = name;
  this.age = age;
}
Person.prototype.hi = function(){
  console.log(this.name + ' say hi.')
}
Person.prototype.LEGS = 2;

//构造类Student
function Student(name,age,className){
  Person.call(this,name,age)
  this.className = className
}
Student.prototype = Object.create(Person.prototype);
Student.prototype.construct = Student;

Student.prototype.walk = function(){
  console.log(this.name + ' is walking')
}
Student.prototype.hi = function(){
  console.log(this.name + ' is saying')
}

//实例化Student
var Sunbey = new Student('sunbey',18,'Grade 1 Class 2')

//遍历Sunbey对象
for(var key in Sunbey){
  var isTrue = Sunbey.hasOwnProperty(key)
  console.log('Is own property:' + isTrue + '; ' + key +': '+ Sunbey[key])
}