<script type="text/javascript">
          // 卷动事件
          onscroll = function() {
//                console.log(document.documentElement.scrollTop);
//                console.log(document.body.scrollTop);
              var scrollTop = document.documentElement.scrollTop || doucument.body.scrollTop;
              console.log(scrollTop);
          } 
    </script>原文:https://www.cnblogs.com/lxystar/p/10213937.html