ES6 class

1.property语法糖

class  MyTest{
   constructor(age){
      this.name = "王"
      this.age = age
   }
   sayHello(){
      console.log(`hello ${this.name} , my age is ${this.age}`)
   }
}
test = new MyTest(18) 
test.sayHello() 

结果:

image.png