jQuery-Methode zum Implementieren des Scrollens bestimmter Inhalte, ohne auf der linken Seite oder an anderen Stellen zu scrollen

Das Beispiel in diesem Artikel beschreibt, wie jQuery das Scrollen bestimmter Inhalte implementiert, ohne auf der linken Seite oder an anderen Stellen zu scrollen. Teilen Sie es als Referenz mit allen. Die Details lauten wie folgt:

Dieser Effekt kann erkennen, dass das Logo in der oberen linken Ecke oben ist, aber nicht gescrollt wird, und der Text im Hauptbereich der Webseite gescrollt wird. Dieser Effekt ist sichtbar, wenn der Benutzer den Bildlauf zieht bar. Das Beispiel ist ganz einfach.

Schauen Sie sich zunächst den Screenshot des Laufeffekts an:

Der spezifische Code lautet wie folgt:

<!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://files.jb51.net/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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</body>
</html>

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Ich hoffe, dass dieser Artikel für das JQuery-Programmierungsdesign aller hilfreich sein wird.