JS快速掌握ES6的class用法

fuction Animal(name,age){
  this.name = name
  this.age = age
  
  // 这样是浪费资源的
  // this.eat = function(){
  //   console.log("今天我吃饭了")
  // }
}

// 正确做法
Animal.prototype.eat=function(){
  console.log("今天我吃饭了")
}

cosnt dog = new Animal("wangcai",2) // 会报错，ES6为了修改陋习，和let和const一样，class不会提升.

class Animal{
  constroctor(name,age){
    this.name = name 
    this.age = age 
  }
  
    eat(){
    console.log("今天我吃饭了")
  }
}

cosnt dog = new Animal("wangcai",2)  //正确位置

class Animal{
  constroctor(name,age){
    this.name = name 
    this.age = age 
  }
  
    eat(){
    console.log("今天我吃饭了")
  }
  

 set name(value){
    this.tempname ="老铁"+value
  }
  
  get name(){
    return this.tempname
  }
  
  static introuduce(){
    console.log("我现在是一个动物类")
  }
}

//set() get()
const dog = new Animal("giao",2)
dog.name="agiao" 
console.log(dog.name) // 老铁agiao

// 静态方法
Animal.introuduce() // 我现在是一个动物类

let tempname = "giao"
class Animal{
   constroctor(name,age){
    this.name = name 
    this.age = age 
  }
  
  [tempname](){
    console.log("一给我咧giao")
  }
}

const xiaoagiao = new Animal("giaoge",30)
xiaoagiao.giao() // 一给我咧giao

function Animal( name ){
  this.name = name
}
Animal.prototype.break(){
  console.log("叫！")
}

function Dog( name, age ){
  Animal.call(this,name)
  this.age = age
}

Dog.prototype = new Animal()
Dog.prototype.constructor = Dog

Animal.call(this,name)

Dog.prototype = new Animal()
Dog.prototype.constructor = Dog

class Animal{
  constructor( name ){
    this.name = name 
  }
  
  break(){
    console.log("叫！")
    }
}

class Dog extends Animal {
  constructor( name, age ){
    super(name)
    this.age=age
  }
}