锚点

crollToAnchor = anchorName => {

        if (anchorName) {

            // 找到锚点

            const anchorElement = document.getElementById(anchorName);

            // 如果对应id的锚点存在，就跳转到锚点

            if (anchorElement) {

            anchorElement.scrollIntoView({ block: "start", behavior: "smooth" });

            }

        }

    };