关于小火箭返回顶部案例 

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    body {
      height: 8000px;
    }
    
    a {
      color: #FFF;
    }
    
    .actGotop {
      position: fixed;
      bottom: 50px;
      right: 50px;
      width: 150px;
      height: 195px;
      display: none;
      z-index: 100;
    }
    
    .actGotop a, .actGotop a:link {
      width: 150px;
      height: 195px;
      display: inline-block;
      background: url(images/gotop.png) no-repeat;
      outline: none;
    }
    
    .actGotop a:hover {
      width: 150px;
      height: 195px;
      background: url(images/gotop.gif) no-repeat;
      outline: none;
    }
  </style>

  
</head>
<body>
<!-- 返回顶部小火箭 -->
<div class="actGotop"><a href="javascript:;" title="Top"></a></div>


<script src="jquery-1.12.4.js"></script>
<script>
  $(function () {
      $(window).scroll(function () {
        if($(window).scrollTop()>=1000){
          $(".actGotop").fadeIn();
        }else{
          $(".actGotop").fadeOut();
        }
      });
      $(".actGotop").click(function () {
          $("html,body").animate({scrollTop:0},2000);
      });

    
  });
</script>
</body>
</html>

 

posted @ 2019-06-16 17:56  tutu3518  阅读(196)  评论(0)  编辑  收藏  举报