JS 面向对象2

es6增加class关键字

class Student{
   constructor(name1){
      this.name1=name1
   }

   fav(){
      return this.name1
   }
}

let s=new Student('li')
console.log(s.fav())

class语法糖根本上还是原型

function Student(name1){
   this.name1=name1
}
Student.prototype.fav=function(){
   return this.name1
}

静态

class Student {

   static fav() {
      return 'abc'
   }
}

console.log(Student.fav())

继承

class Person{
   eat(){console.log('eee')}
}

class Student extends Person {}

new Student().eat()