lovecoding
/
web0715


			
				
					
						
						
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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>
        class Person{
            constructor(userName,userAge){
                this.userName = userName;
                this.userAge = userAge;
            }
            showName(){
                console.log(this.userName);
            }
        }
        // let p1 = new Person("小明",18);
        // console.log(p1.userAge);
        // p1.showName();

        class Student extends Person{
            constructor(userName,userAge,school){
                super(userName,userAge);
                this.school = school;
            }
            showSchool(){
                console.log(this.school);
            }
        }

        let s1 = new Student("小红",20,"黑工程");
        console.log(s1.userAge);
        s1.showName();
        console.log(s1.constructor)
        s1.showSchool();
    </script>
</body>
</html>