jQuery实现指定内容滚动同时左侧或其它地方不滚动的方法

本文实例讲述了jQuery实现指定内容滚动同时左侧或其它地方不滚动的方法。分享给大家供大家参考。具体如下：

本效果可实现左上角Logo的置顶但不滚动，而文字也就是网页主体区滚动，当用户拖动滚动条的时候可看到此效果，例子挺简单。

先看一下运行效果截图：

具体代码如下：

<!DOCTYPE html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery跟随滚动的侧边条效果</title>
<style>
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video{margin: 0;padding: 0;border: 0;font-size: 100%;font: inherit;vertical-align: baseline;}
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section{display: block;}
body{line-height: 1;}
ol, ul{list-style: none;}
blockquote, q{quotes: none;}
blockquote: before, blockquote: after,
q: before, q: after{content: '';content: none;}
table{border-collapse: collapse;border-spacing: 0;}
a{text-decoration: none;}
body{background: url("http://zsrimg.ikafan.com/file_images/article/201508/201588101650294.jpg") repeat scroll 0 0 transparent;font: 12px/20px "Helvetica Neue",Helvetica,Arial,sans-serif;}
p{line-height: 24px;margin: 0 0 15px 0;color: #fff;}
.header{color: #FFFFFF;font-size: 15em;height: 150px;letter-spacing: -10px;margin: 20px auto;clear: both;text-align: center;font-family: Georgia, "Times New Roman", Times, serif;}
.italic{font-style: italic;}
#sticky{margin-top: 50px;margin-left: 50px;padding: 5px;background: rgba(255,255,255,1);height: 120px;width: 305px;-webkit-border-radius: 7px;-moz-border-radius: 7px;border-radius: 7px;}
#sticky: hover{background: #6c6c6c;background: rgba(54,54,54,0.80);}
.sticky_text{color: #ffffff;text-align: center;font-size: 16px;line-height: 20px;padding-top: 10px;}
#text, h1{color: #fff;margin: 0 auto;font-size: 1.2em;line-height: 23px;width: 500px;}
h1,h2{font-weight: bold;line-height: 50px;}
a{color: #e3e3e3;}
a: hover{color: #ccc;}
#container{width: 744px;}
.menu{float: left;}
.button{-moz-box-shadow: inset 0px 1px 0px 0px #ffffff;-webkit-box-shadow: inset 0px 1px 0px 0px #ffffff;box-shadow: inset 0px 1px 0px 0px #ffffff;background: -webkit-gradient( linear, left top, left bottom, color-stop(0.05, #ededed), color-stop(1, #dfdfdf) );background: -moz-linear-gradient( center top, #ededed 5%, #dfdfdf 100% );filter: progid: DXImageTransform.Microsoft.gradient(startColorstr='#ededed', endColorstr='#dfdfdf');background-color: #ededed;-moz-border-radius: 6px;-webkit-border-radius: 6px;border-radius: 6px;border: 1px solid #dcdcdc;display: inline-block;color: #777777;font-family: arial;font-size: 15px;font-weight: bold;padding: 6px 24px;text-decoration: none;text-shadow: 1px 1px 0px #ffffff;cursor: pointer;margin-top: 10px;}
.button: hover{background: -webkit-gradient( linear, left top, left bottom, color-stop(0.05, #ededed), color-stop(1, #cfcfc) );background: -moz-linear-gradient( center top, #ededed 5%, #cfcfcf 100% );filter: progid: DXImageTransform.Microsoft.gradient(startColorstr='#ededed', endColorstr='#cfcfcf');background-color: #ededed;border: 1px solid #bbbbbb;}
.button: active{background: -webkit-gradient( linear, left top, left bottom, color-stop(0.05, #dfdfdf), color-stop(1, #ededed) );background: -moz-linear-gradient( center top, #dfdfdf 5%, #ededed 100% );filter: progid: DXImageTransform.Microsoft.gradient(startColorstr='#dfdfdf', endColorstr='#ededed');background-color: #dfdfdf;}
#download{margin-top: 50px;width: 400px;height: 100px;font-size: 72px;line-height: 100px;margin-right: 100px;margin-bottom: 50px;text-align: center;}
</style>
<script src="jquery-1.6.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function(){
var obj = $('#sticky');
var offset = obj.offset();
var topOffset = offset.top;
var leftOffset = offset.left;
var marginTop = obj.css("marginTop");
var marginLeft = obj.css("marginLeft");
$(window).scroll(function() {
var scrollTop = $(window).scrollTop();
 if (scrollTop >= topOffset){
  obj.css({
   marginTop: 0,
   marginLeft: leftOffset,
   position: 'fixed',
  });
 }
 if (scrollTop < topOffset){
  obj.css({
   marginTop: marginTop,
   marginLeft: marginLeft,
   position: 'relative',
  });
 }
});
});
</script>
</head>
<body>
<div id="sticky">
 <div id="carbonads-container">
   <div class="carbonad">
    <div id="azcarbon"></div>
     <img src="http://www.jb51.net/images/logo.gif"/>
    </div>
   </div>
  </div>
<div id="text">
<div class="header">d<span class="italic">w</span></div>
<h1>Tutorial: Creating A Sticky Sidebar Using jQuery</h1>
<p>DesignWoop welcomes this guest post by <a href="#">Alexandre Smirnov</a> a web designer and developer who lives and works in Cal-i-for-nia.</p>
<h2><strong>Read the tutorial:</strong> <a href="#">Creating A Sticky Sidebar Using jQuery</a></h2>
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<p>Mattis parturient mus platea integer ut cursus diam turpis a scelerisque sit, scelerisque! Mauris, ac pellentesque velit purus cras porttitor ut vel arcu, augue mauris! Etiam placerat turpis etiam amet augue velit? Dis odio ridiculus, lundium nec tempor platea, phasellus sagittis! Mattis. Ac nisi! Scelerisque, facilisis elit nascetur, mid parturient vut? Turpis aenean, placerat. Velit placerat mid in turpis, ut hac et turpis odio ac rhoncus elementum tortor turpis, eu habitasse nunc mattis ac dapibus habitasse integer duis tortor duis tortor aliquam, amet ultrices, nunc. Aliquam aliquam. Aliquet penatibus, nec elit pulvinar ridiculus, ut arcu, lacus natoque magnis tempor in et enim amet, lorem. Urna tristique placerat! Rhoncus amet tincidunt integer. Dapibus facilisis sit cum, diam vut, odio pulvinar.</p>
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</body>
</html>

希望本文所述对大家的jquery程序设计有所帮助。