lovecoding
/
class


			
				
					
						
						
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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>
        // 类 class声明类
        class Person {
            // 1.构造器 属性
            constructor(name,age){
                this.name = name;
                this.age = age;
            }
            // 2.方法
            say() {
                console.log("hello")
            }
            // static 类方法
            static hello() {
                console.log("你好啊");
            }
        }
        // 继承类
        // child要继承person中的属性及方法
        class Child extends Person {
            constructor(name,age,aaa,bbb) {
                // super() 继承父类
                super(name,age);
                this.aaa = aaa;
                this.bbb = bbb;
            }
            hi() {
                console.log("hi")
            }
        }

        // 调用
        // 实例化对象
        let per = new Person("John",20)
        console.log(per.name,per.age);
        per.say();
        // per.hello()
        Person.hello()

        let children = new Child("Lucy",10,11,22);
        console.log(children.name,children.age,children.aaa,children.bbb);
        children.say();
        children.hi()
    </script>
</body>
</html>