<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
function Phone(brand,price){
this.brand = brand
this.price = price
}
Phone.prototype.call = function(){
console.log("我可以打电话");
}
// 智能手机
function SmartPhone(brand,price,color,size){
Phone.call(this,brand,price)
this.color = color;
this.size = size;
}
// 设置子级构造函数的原型
SmartPhone.prototype= new Phone;
SmartPhone.prototype.constructor = SmartPhone;
// 声明子类的方法
SmartPhone.prototype.photo = function(){
console.log('我可以拍照');
}
SmartPhone.prototype.playGame = function(){
console.log('我可以拍照');
}
const chuizi = new SmartPhone('锤子',2499,'黑色','5.5inch')
console.log(chuizi);
</script>
</body>
</html>
