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  • 鼠标滚轮事件

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
        <title>无标题文档</title>
        <style type="text/css">
            div{
                height: 800px;
            }
        </style>
        <script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
        <script type="text/javascript" src="jquery-3.1.1.js"></script>
        <script type="text/javascript">
            $('document').ready(function(){
                var lastScrollTop = 0;
                $(window).scroll(function(event){
                   var st = $(this).scrollTop();
                   if (st > lastScrollTop){
                       // downscroll code
                       alert('向下滚动');
                   } else {
                      // upscroll code
                       alert('向上滚动');
                   }
                   lastScrollTop = st;
                });
            });
        </script>
    </head>
    <body>
        <div></div>
    </body>
    <html>
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  • 原文地址:https://www.cnblogs.com/supe/p/6426142.html
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