如果有人想用React钩子实现它

  const [scrollStatus, setScrollStatus] = useState({
    scrollDirection: null,
    scrollPos: 0,
  });

  useEffect(() => {
    window.addEventListener("scroll", handleScrollDocument);

    return () => window.removeEventListener("scroll", handleScrollDocument);
  }, []);

  function handleScrollDocument() {
    setScrollStatus((prev) => { // to get 'previous' value of state
      return {
        scrollDirection:
          document.body.getBoundingClientRect().top > prev.scrollPos
            ? "up"
            : "down",
        scrollPos: document.body.getBoundingClientRect().top,
      };
    });
  }

  console.log(scrollStatus.scrollDirection)

你可以试试这样做。

function scrollDetect(){ var lastScroll = 0; window.onscroll = function() { let currentScroll = document.documentElement.scrollTop || document.body.scrollTop; // Get Current Scroll Value if (currentScroll > 0 && lastScroll <= currentScroll){ lastScroll = currentScroll; document.getElementById("scrollLoc").innerHTML = "Scrolling DOWN"; }else{ lastScroll = currentScroll; document.getElementById("scrollLoc").innerHTML = "Scrolling UP"; } }; } scrollDetect(); html,body{ height:100%; width:100%; margin:0; padding:0; } .cont{ height:100%; width:100%; } .item{ margin:0; padding:0; height:100%; width:100%; background: #ffad33; } .red{ background: red; } p{ position:fixed; font-size:25px; top:5%; left:5%; } <div class="cont"> <div class="item"></div> <div class="item red"></div> <p id="scrollLoc">0</p> </div>

我个人使用这段代码来检测javascript中的滚动方向… 你只需要定义一个变量来存储lastscrollvalue，然后使用这个if&else

let lastscrollvalue;

function headeronscroll() {

    // document on which scroll event will occur
    var a = document.querySelector('.refcontainer'); 

    if (lastscrollvalue == undefined) {

        lastscrollvalue = a.scrollTop;

        // sets lastscrollvalue
    } else if (a.scrollTop > lastscrollvalue) {

        // downscroll rules will be here
        lastscrollvalue = a.scrollTop;

    } else if (a.scrollTop < lastscrollvalue) {

        // upscroll rules will be here
        lastscrollvalue = a.scrollTop;

    }
}

修改Prateek的答案，如果lastScrollTop没有变化，那么它将是一个水平滚动(在x方向溢出，可以使用鼠标使用水平滚动条或使用滚动轮+ shift来使用。

const containerElm = document.getElementById("container");

let lastScrollTop = containerElm.scrollTop;

containerElm.addEventListener("scroll", (evt) => {
  const st = containerElm.scrollTop;

  if (st > lastScrollTop) {
    console.log("down scroll");
  } else if (st < lastScrollTop) {
    console.log("up scroll");
  } else {
    console.log("horizontal scroll");
  }

  lastScrollTop = Math.max(st, 0); // For mobile or negative scrolling
});

你可以使用document.documentElement.scrollTop获取滚动条的位置。然后就是简单地将它与之前的位置进行比较。

这似乎工作得很好。

document.addEventListener('DOMContentLoaded', () => {

    var scrollDirectionDown;
    scrollDirectionDown = true;

    window.addEventListener('scroll', () => {

        if (this.oldScroll > this.scrollY) {
            scrollDirectionDown = false;
        } else {
            scrollDirectionDown = true;
        }
        this.oldScroll = this.scrollY;


        // test
        if (scrollDirectionDown) {
            console.log('scrolling down');
        } else {
            console.log('scrolling up');
        }



    });
});