ES6 class学习笔记

ES5中生成实例对象的方法是通过构造函数:

function Person(name, age){
   this.name = name
   this.age = age
}
Person.prototype.sayName = function () {
　　console.log(this.name)
}

ES6中添加新的语法生成对象实例：

class Person {
   constructor (name, age) {
       this.name = name
       this.age = age
   }
   sayName () {
      console.log(this.name)
   }
}