Vue滚动到顶部

        goPost() {
            let distance =
                document.documentElement.scrollTop || document.body.scrollTop; //获得当前高度
            let step = distance / 30; //每步的距离
            (function jump() {
                if (distance > 0) {
                    distance -= step;
                    window.scrollTo(0, distance);
                    setTimeout(jump, 10);
                }
            })();
        }