lovecoding
/
Web1020


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // 创建一个类 
        class Person{
            constructor(userName,userAge){
                this.userName = userName;
                this.userAge = userAge;
            }
            talk(){
                console.log(`大家好我叫${this.userName}今年${this.userAge}岁了`);
            }
        }
        // 实例化一个对象
        // let p1 = new Person('张三',18);
        // console.log(p1);
        // p1.talk();

        // 实现类的继承
        class Student extends Person{
            constructor(userName,userAage,school){
                super(userName,userAage);
                this.school = school;
            }
            sayHello(){
                console.log("hello world");
            }
        }

        let s1 = new Student('李四',18,'清华大学');
        console.log(s1.userName);
        s1.talk();
        s1.sayHello();
    </script>
</body>
</html>