示例
ts文件:
(function () { class Animal { name: string; constructor(name: string) { this.name = name; } sayHello() { console.log('动物在叫~'); } } class Dog extends Animal{ age: number; constructor(name: string, age: number) { // 如果在子类中写了构造函数,在子类构造函数中必须对父类的构造函数进行调用 super(name); // 调用父类的构造函数 this.age = age; } sayHello() { // 在类的方法中 super就表示当前类的父类 super.sayHello(); console.log('汪汪汪汪!'); } } const dog = new Dog('旺财', 3); dog.sayHello(); })();
标签:TypeScript,name,age,sayHello,super,string,构造函数 From: https://www.cnblogs.com/anjingdian/p/16929314.html