class的继承和私有变量的实现

var FClass =(function(){
    var _name;
    class FClass{    
        constructor(preName,lastName,str){
            this.preName=preName;
            this.lastName=lastName;
        }
        setName(name){
            _name=name;
        }
        getName(){
            return _name;
        }
    }   
    return FClass; 
})();
class CClass extends FClass{
    constructor(pre,last,str){
        super(pre,last,str);
    }
}

var obj=new CClass(‘hello‘,‘gamecc‘,‘描述信息‘);
obj.setName(‘ddd‘);
console.log("输出类的信息："+obj._name);
console.log(obj.getName());