???????????????<script src="https://code.jquery.com/jquery.js"></script> ??//引入jquery<script> ???????????????????????//滚动事件绑定$(window).scroll(function() { ????????????????????????// $(window).scrollTop() ?窗口滚动的高度 ????????????????????????// $(window).height() ?屏幕可见区域的高度 ????????//移动高度+屏幕高度 ??????????????????????????????var windowHeight = $(window).scrollTop() + $(window).height();var sideHeight = $(‘#右侧边栏的id名‘).height();if (windowHeight > sideHeight) {$(‘#右侧边栏的id名‘).css({‘position‘ : ‘fixed‘,right : ‘0px‘,top : -(sideHeight - $(window).height()) //负值});} else {$(‘#右侧边栏的id名‘).css({‘position‘ : ‘static‘ ??});}}); ??????????????????????//适应window的大小 ??????????????????????window.onload=function() { ???$(window).trigger(‘scroll‘);}; ????????????????????$(window).resize(function(){ ????????????????????????$(window).trigger(‘scroll‘); ?????????????????????});</script>//设置fixed 条件判断移动高度+屏幕高度>右侧边栏高度
html5 ?固定边栏滚动特效
原文地址：http://www.cnblogs.com/guangzhou11/p/7523640.html