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

    DoSome(){
        console.log('I do something.......');
        
    }


}

class Chinese extends People{
    SpeakCn(){
        console.log('我会说中国话......');
        
    }
}


const peo1 = new Chinese('cc',26)
peo1.DoSome()
peo1.SpeakCn()

Ts为js增加了继承支持 这样就可以更好的复用根类型的数据结构