web250825/ts/4.面向对象/src/5.抽象类.ts

(function(){
    /**
     * abstract 与其他类差别不大
     * 抽象类不是为了实例化对象
     * 它是因为继承产生的
    */
   abstract class Animal {
        name:string;
        constructor(name:string) {
            this.name = name;
        }
        // say(){
        //     console.log("你好")
        // }
        abstract say():void
   }
   class Child3 extends Animal{
    say() {
        console.log(`你好${this.name}`)
    }
   }
   let c1 = new Child3("花花");
   console.log(c1);
   c1.say()
//    let a1 = new Animal('图图');
//    console.log(a1,'a1')
//    a1.say()
})()