保持超级简单:

jQuery事件监听器

$(window).on('wheel', function(){
  whichDirection(event);
});

香草JavaScript事件监听器

if(window.addEventListener){
  addEventListener('wheel', whichDirection, false);
} else if (window.attachEvent) {
  attachEvent('wheel', whichDirection, false);
}

功能不变:

function whichDirection(event){
  console.log(event + ' WheelEvent has all kinds of good stuff to work with');
  var scrollDirection = event.deltaY;
  if(scrollDirection === 1){
    console.log('meet me at the club, going down', scrollDirection);
  } else if(scrollDirection === -1) {
    console.log('Going up, on a tuesday', scrollDirection);
  }
}

我在这里写了一篇更深入的文章 ​​​​​​​

滚动事件

滚动事件在FF中表现得很奇怪(它会因为平滑滚动而被触发很多次)，但它是有效的。

注意:滚动事件实际上是在使用光标键或鼠标滚轮拖动滚动条时触发的。

//creates an element to print the scroll position
$("<p id='test'>").appendTo("body").css({
    padding: "5px 7px",
    background: "#e9e9e9",
    position: "fixed",
    bottom: "15px",
    left: "35px"
});

//binds the "scroll" event
$(window).scroll(function (e) {
    var target = e.currentTarget,
        self = $(target),
        scrollTop = window.pageYOffset || target.scrollTop,
        lastScrollTop = self.data("lastScrollTop") || 0,
        scrollHeight = target.scrollHeight || document.body.scrollHeight,
        scrollText = "";

    if (scrollTop > lastScrollTop) {
        scrollText = "<b>scroll down</b>";
    } else {
        scrollText = "<b>scroll up</b>";
    }

    $("#test").html(scrollText +
      "<br>innerHeight: " + self.innerHeight() +
      "<br>scrollHeight: " + scrollHeight +
      "<br>scrollTop: " + scrollTop +
      "<br>lastScrollTop: " + lastScrollTop);

    if (scrollHeight - scrollTop === self.innerHeight()) {
      console.log("► End of scroll");
    }

    //saves the current scrollTop
    self.data("lastScrollTop", scrollTop);
});

轮事件

你也可以看看MDN，它揭露了关于车轮事件的大量信息。

注意:wheel事件仅在使用鼠标滚轮时触发;光标键和拖动滚动条不会触发事件。

我阅读了文档和示例:跨浏览器监听此事件 在FF, IE, chrome, safari进行了一些测试后，我得到了这个片段:

//creates an element to print the scroll position
$("<p id='test'>").appendTo("body").css({
    padding: "5px 7px",
    background: "#e9e9e9",
    position: "fixed",
    bottom: "15px",
    left: "15px"
});

//attach the "wheel" event if it is supported, otherwise "mousewheel" event is used
$("html").on(("onwheel" in document.createElement("div") ? "wheel" : "mousewheel"), function (e) {
    var evt = e.originalEvent || e;

    //this is what really matters
    var deltaY = evt.deltaY || (-1 / 40 * evt.wheelDelta), //wheel || mousewheel
        scrollTop = $(this).scrollTop() || $("body").scrollTop(), //fix safari
        scrollText = "";

    if (deltaY > 0) {
        scrollText = "<b>scroll down</b>";
    } else {
        scrollText = "<b>scroll up</b>";
    }

    //console.log("Event: ", evt);
    $("#test").html(scrollText +
      "<br>clientHeight: " + this.clientHeight +
      "<br>scrollHeight: " + this.scrollHeight +
      "<br>scrollTop: " + scrollTop +
      "<br>deltaY: " + deltaY);
});

对于用户何时从页面顶部滚动以及何时返回到页面顶部，这是简单而容易的检测。

$(window).scroll(function() {
    if($(window).scrollTop() > 0) {
        // User has scrolled
    } else {
        // User at top of page
    }
});

我在这里看到了许多版本的好答案，但似乎有些人有跨浏览器的问题，所以这是我的解决方案。

我已经成功地使用这个方法在FF, IE和Chrome中检测方向…我没有在safari中测试它，因为我通常使用windows。

$("html, body").bind({'mousewheel DOMMouseScroll onmousewheel touchmove scroll': 
    function(e) {
        if (e.target.id == 'el') return;
        e.preventDefault();
        e.stopPropagation();

        //Determine Direction
        if (e.originalEvent.wheelDelta && e.originalEvent.wheelDelta >= 0) {
            //Up
            alert("up");

        } else if (e.originalEvent.detail && e.originalEvent.detail <= 0) {
            //Up
            alert("up");

        } else {
            //Down
            alert("down");
        }
    }
});

请记住，我也使用这个来停止任何滚动，所以如果你想要滚动仍然发生，你必须删除e.preventDefault();e.stopPropagation ();

如果你只是想知道你是使用指针设备(鼠标或跟踪板)向上滚动还是向下滚动，你可以使用wheel事件的delay属性。

$('.container').on('wheel', function(event) { if (event.originalEvent.deltaY > 0) { $('.result').append('Scrolled down!<br>'); } else { $('.result').append('Scrolled up!<br>'); } }); .container { height: 200px; width: 400px; margin: 20px; border: 1px solid black; overflow-y: auto; } .content { height: 300px; } <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="container"> <div class="content"> Scroll me! </div> </div> <div class="result"> <p>Action:</p> </div>

检查当前的scrollTop和之前的scrollTop

var lastScrollTop = 0;
$(window).scroll(function(event){
   var st = $(this).scrollTop();
   if (st > lastScrollTop){
       // downscroll code
   } else {
      // upscroll code
   }
   lastScrollTop = st;
});