(function(){
class Animal{
name:string;
constructor(name:string){
this.name=name;
}
sayHello(){
console.log('动物再叫---');
}
}
class Dog extends Animal {
age:number;
constructor(name:string,age:number){
super(name);
this.age=age;
}
sayHello() {
// super.sayHello();
console.log('汪汪汪！');
}
}
const dog=new Dog('旺财',18);
dog.sayHello();
})();
标签：TypeScript,name,age,sayHello,super,string From： https://www.cnblogs.com/tanxwuwang/p/17075068.html