css 顶部按钮 - la点击se duce page up。

Posted 2021-05-13

  <script>
  $(document).ready(function () {

    $(window).scroll(function () {
      if ($(this).scrollTop() > 100) {
        $('.scrollup').fadeIn();
      } else {
        $('.scrollup').fadeOut();
      }
    });

    $('.scrollup').click(function () {
      $("html, body").animate({
        scrollTop: 0
      }, 600);
      return false;
    });

  });
  </script>

<a href="#" class="scrollup">Scroll</a>

.scrollup {
    z-index: 99;
    width: 50px;
    height: 50px;
    position: fixed;
    bottom: 5px;
    right: 5px;
    display: none;
    text-indent: -9999px;
    background: url('http://lptemplates.rs.ro/template.14x0044/images/top.png');  
}