js特效2

侧边栏简单版

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script src="//cdn.bootcss.com/jquery/1.12.4/jquery.min.js"></script>
    <style>
        body,div{
            margin: 0;
            padding: 0;
        }

        .scrollbar{position: absolute;right:0;top:0;border: 1px solid red;width:200px;height: 200px;}

    </style>

</head>
<body style="border:1px solid green; height: 2000px;" >
    <div class="scrollbar">
        123 <br/>
        <img src="123.png" alt="" width="100"/>
    </div>
    <script>
        var heightAll=$(window).height();
        var heightBar=$('.scrollbar').height();
        var fixedTop=(heightAll-heightBar)/2;
        $('.scrollbar').css({top:fixedTop+'px'});
        $(window).scroll(function () {
            var scrollTop=$(window).scrollTop();
            var scrollEnd=scrollTop+fixedTop;
            $(".scrollbar").stop().animate({top:scrollEnd});
        })
    </script>
</body>
</html>

侧边栏详细版

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jquery右侧随滚动条浮动导航代码 - xw素材网</title>
<script type="text/javascript" src="js/jQuery.js"></script>
<style>
  body{ margin:0; padding:0;}
  .main{ width:100%; height:auto;}
  .main div{ width:100%;}
  #float01{ height:930px; background:#004}
  #float02{ height:900px; background:#00f}
  #float03{ height:980px; background:#0ff}
  #float04{ height:930px; background:#0ad}
  #float05{ height:960px; background:#0d0}
  #float06{ height:970px; background:#0f0}
  #float07{ height:900px; background:#dd4}
  div.floatCtro{ width:60px; height:350px; position:absolute; right:0; top:0; z-index:100}
  div.floatCtro p{width:60px; text-align:center; height:40px; line-height:40px; font-family:'微软雅黑'; font-size:14px; color:#676767; margin:0; padding:0; cursor:pointer; background:#fff;}
  div.floatCtro a{ display:inline-block; display:none; width:60px; height:60px; margin:10px 0 0 0; background:#fff; color:#000;  vertical-align:middle; cursor:pointer;}
  div.floatCtro a span{ display:block; width:28px; height:44px; line-height:22px;  font-family:'微软雅黑'; font-size:14px; line-height:22px; text-align:center; margin:8px 16px; _margin:-10px 0 0 16px;}
  div.floatCtro a:hover{ background:#000; color:#fff; zoom:1;}
  div.floatCtro p:hover{ background:#c40000; color:#fff;}
  div.floatCtro p.cur{ background:#c40000; color:#fff;}
</style>
<script>
   $(function(){
       var AllHet = $(window).height();
       var mainHet= $('.floatCtro').height();
       var fixedTop = (AllHet - mainHet)/2
       $('div.floatCtro').css({top:fixedTop+'px'});
       $('div.floatCtro p').click(function(){
            var ind = $('div.floatCtro p').index(this)+1;
            var topVal = $('#float0'+ind).offset().top;
            $('body,html').animate({scrollTop:topVal},1000)
        })
        $('div.floatCtro a').click(function(){
            $('body,html').animate({scrollTop:0},1000)
            })
       $(window).scroll(scrolls)
       scrolls()
       function scrolls(){
           var f1,f2,f3,f4,f5,f6,f7,bck;
           var fixRight = $('div.floatCtro p');
           var blackTop = $('div.floatCtro a')
           var sTop = $(window).scrollTop();
           fl = $('#float01').offset().top;
           f2 = $('#float02').offset().top;
           f3 = $('#float03').offset().top;
           f4 = $('#float04').offset().top;
           f5 = $('#float05').offset().top;
           f6 = $('#float06').offset().top;
           f7 = $('#float07').offset().top;
           var topPx = sTop+fixedTop
            $('div.floatCtro').stop().animate({top:topPx});
           if(sTop<=f2-100){
               blackTop.fadeOut(300).css('display','none')
               }
           else{
               blackTop.fadeIn(300).css('display','block')
               }
           if(sTop>=fl){
               fixRight.eq(0).addClass('cur').siblings().removeClass('cur');
               }
           if(sTop>=f2-100){
               fixRight.eq(1).addClass('cur').siblings().removeClass('cur');
               }
           if(sTop>=f3-100){
               fixRight.eq(2).addClass('cur').siblings().removeClass('cur');
               }
           if(sTop>=f4-100){
               fixRight.eq(3).addClass('cur').siblings().removeClass('cur');
               }
           if(sTop>=f5-100){
               fixRight.eq(4).addClass('cur').siblings().removeClass('cur');
               }
           if(sTop>=f6-100){
               fixRight.eq(5).addClass('cur').siblings().removeClass('cur');
               }
           if(sTop>=f7-100){
               fixRight.eq(6).addClass('cur').siblings().removeClass('cur');
               }
         }
       })
</script>
<title>test</title>
</head>
<body>
<div class="main">
     <div id="float01" class="cur"></div>
     <div id="float02"></div>
     <div id="float03"></div>
     <div id="float04"></div>
     <div id="float05"></div>
     <div id="float06"></div>
     <div id="float07"></div>
     <div class="floatCtro">
          <p>楼层一</p>
          <p>楼层二</p>
          <p>楼层三</p>
          <p>楼层四</p>
          <p>楼层五</p>
          <p>楼层六</p>
          <p>楼层七</p>
          <a>
            <font style="width:60px; height:1px; display:block"></font>
            <span>返回顶部</span>
          </a>
     </div>
</div>
<div style="text-align:center;margin:50px 0; font:normal 14px/24px 'MicroSoft YaHei';">
<p>适用浏览器：IE8、360、FireFox、Chrome、Safari、Opera、傲游、搜狗、世界之窗. </p>
<p>来源：<a href="http://www.xwcms.net/" target="_blank">xw素材网</a></p>
</div>
</body>
</html>