添加网页动态滚动进度条|滚动指示器

<!--动态滚动进度条--><div class="scroll-line" style="z-index: 999;position: fixed;height: 3px;margin-top: 0px;background-color: #6B999B;width: 0%;"></div><script type="text/javascript">    $(window).scroll(function() {        var winTop = $(window).scrollTop(), //滚动条的位置                docHeight = $(document).height(),   //文档高度                winHeight = $(window).height(); //窗口高度        var scrolled = (winTop / (docHeight - winHeight))*100;        $('.scroll-line').css('width', (scrolled + '%'));    });</script>