读取浏览器历史的行为（解析浏览器的一些“滚动”行为鉴赏）

window.scrollTo(0, 0);

// or
window.scrollTo({
  left: 0,
  top: 100
});

window.scrollBy(0, 0);

// or
window.scrollBy({
  left: 0,
  top: 100
});

document.scrollingElement.scrollTop = 100;

// 获取元素的offsetTop(元素距离文档顶部的距离)
let offsetTop = document.querySelector(".box").offsetTop;

// 设置滚动条的高度
window.scrollTo(0, offsetTop);

<a href="#box">盒子出现在顶部</a>
<li id="box"></li>

document.querySelector(".box").scrollIntoView();

// start出现在视口顶部、center出现在视口中央、end出现在视口底部
document.querySelector(".box").scrollIntoView({
  block: "start" || "center" || "end"
});

window.scrollTo({
  behavior: "smooth"
});

window.scrollBy({
  behavior: "smooth"
});

document.querySelector(".box").scrollIntoView({
  behavior: "smooth"
});

html {
  scroll-behavior: smooth; // 全局滚动具有平滑效果
}

// 或者所有
* {
 scroll-behavior: smooth;
}

let scrollHeight = document.documentElement.scrollHeight || document.body.scrollHeight;

let scrollHeight = document.scrollingElement.scrollHeight;

window.scrollTo({
  left: 0,
  top: document.scrollingElement.scrollHeight
});

// 如果你实在是懒的话...
window.scrollTo(0, 999999);

window.addEventListener("scroll", () => {
  let {
    scrollTop,
    scrollHeight,
    clientHeight
  } = document.scrollingElement;
  
  // 当前滚动高度 + 视口高度 >= 文档总高度
  if (scrollTop + clientHeight >= scrollHeight) {
    console.log("已到达底部");
  }
});

window.addEventListener("scroll", () => console.log("我在滚我在滚！"));

window.addEventListener("scroll", throttle(() => console.log("我在滚我在滚！")));

function throttle(fn, interval = 500) {
  let run = true;

  return function () {
    if (!run) return;
    run = false;
    setTimeout(() => {
      fn.apply(this, arguments);
      run = true;
    }, interval);
  };
}

window.addEventListener("scroll", debounce(() => console.log("滚动结束！")));

function debounce(fn, interval = 500) {
  let timeout = null;

  return function () {
    clearTimeout(timeout);
    timeout = setTimeout(() => {
      fn.apply(this, arguments);
    }, interval);
  };
}

.box {
  -webkit-overflow-scrolling: touch;
}

.box {
  overscroll-behavior: contain; // 阻止滚动传播
}

<ul>
  <li>
    <img src="">
  </li>
  // ...
</ul>

ul {
  white-space: nowrap; // 超出不换行
  overflow-x: auto;

  li {
    display: inline-block;

    img {
      display: block;
      width: 200px;
    }
  }
}

ul {
  scroll-snap-type: x mandatory;
  
  li {
    scroll-snap-align: start;
  }
}

li {
  scroll-snap-align: center;
}