<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
class Phone{
// 构造方法
constructor(brand,price){
this.brand = brand
this.price = price
}
// 父类的成员属性
call(){
console.log("我可以打电话");
}
}
class SmartPhone extends Phone{
// 构造方法
constructor(brand,price,color,size) {
super(brand,price);
this.color = color;
this.size = size;
}
// photo(){
// console.log("拍照")
// }
// playGame(){
// console.log("玩游戏");
// }
}
const xiaomi = new SmartPhone('小米',799,'黑色','4.7inch')
console.log(xiaomi);
</script>
</body>
</html>
