【TypeScript】六、Class

1. 类定义

class Person {
    private name: string
    age: number
    constructor(name: string, age: number) {
        this.name = name
        this.age = age
    }

    display(): void {
        console.log(this.name + ' ' + this.age.toString());
    }
}

let p: Person = new Person("hamusuta", 20)
p.display()

2. private，public，protected修饰可访问性，不写默认public
3. constructor，构造函数，使用new关键字创建对象
4. this.name需要提前在类中声明属性
5. static，静态属性
6. 静态方法中无法调用实例属性和实例方法
7. 实现接口

interface Action {
    run(): void
}

class Animal implements Action {
    run(): void {
        console.log("animal run");

    }
}


class Human implements Action {
    run(): void {
        console.log("human run");

    }
}

let a = new Animal()

let b = new Human()

a.run()
b.run()