简单来说静态成员就是类的属性而不是实例对象的属性

    class Phone{
        //静态属性
        static name = "手机";
        static call(){
            console.log("打电话");
        }
    }
    let Huawei = new Phone();
    console.log((Huawei.name));//undefined
    console.log(Phone.name);//手机