js 滚动条滑动

toTop() {
            let top = document.documentElement.scrollTop || document.body.scrollTop;
            // 实现滚动效果
            const timeTop = setInterval(() => {
                document.body.scrollTop = document.documentElement.scrollTop = top -= 50;
                if (top <= 0) {
                    clearInterval(timeTop);
                }
                console.log(document.documentElement.scrollTop);
            }, 10);

原文地址：https://www.cnblogs.com/xiaozhang666/p/11433825.html