基于jQuery的无缝滚动应用(单行或多行) -

时间：2010-09-03 来源：缘分星空

基于jQuery的上下无缝滚动应用,可应用于多行或者单行.详解请参考注释. 核心jQuery代码:
$(function(){
var _wrap=$('ul.line');//定义滚动区域
var _interval=2000;//定义滚动间隙时间
var _moving;//需要清除的动画
_wrap.hover(function(){
clearInterval(_moving);//当鼠标在滚动区域中时,停止滚动
},function(){
_moving=setInterval(function(){
var _field=_wrap.find('li:first');//此变量不可放置于函数起始处,li:first取值是变化的
var _=_field.height();//取得每次滚动高度(多行滚动情况下,此变量不可置于开始处,否则会有间隔时长延时)
_field.animate({marginTop:-_h+'px'},600,function(){//通过取负margin值,隐藏第一行
_field.css('marginTop',0).appendTo(_wrap);//隐藏后,将该行的margin值置零,并插入到最后,实现无缝滚动
})
},_interval)//滚动间隔时间取决于_interval
}).trigger('mouseleave');//函数载入时,模拟执行mouseleave,即自动滚动
});

演示代码:

<!DOCTYPE HTML> <html> <head> <meta charset="utf-8"> <meta name="author" content="Mr.Think青鸟" /> <meta name="keywords" content="Mr.Think,前端开发,WEB前端,前端技术,前端开发,WEB前端开发,用户体验,网站策划,网站优化,青鸟,javascript,jQuery,css,xhtml,html,UE,SEO,Mr.Think的博客,青鸟的博客,PHP爱好者,Bluebirdsky" /> <meta name="description" content="Mr.Think的博客,中文网名青鸟,现专注于WEB前端开发,同时也是一位PHP的爱好者.爱思考,有点代码洁癖,生吃过螃蟹腿,喜好肉食.这里是我记录知识与生活琐事的地方." /> <link rel="pingback" href="http://mrthink.net/xmlrpc.php" /> <link rel="alternate" type="application/rss+xml" title="Mr.Think的博客 RSS Feed" href="http://mrthink.net/feed/" /> <title>基于jQuery的上下无缝滚动应用(单行或多行)@Mr.Think</title> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script> <style> /*reset css*/ body{font-size:0.8em;letter-spacing:1px;font-family:"微软雅黑"; line-padding:0} h1{font-size:1em; font-weight:normal;} h1 a{background:#047; padding:2px 3px; color:#fff; text-decoration:none;} h1 a:hover{background:#a40000; color:#fff; text-decoration:underline} h3{color:#888; font-weight:bold;font-size:1em; margin:1em auto; position:relative} /*demo css*/ h2{background:#a40000; font-size:12px; color:#fff; font-weight:normal; text-align:center; width:100px; line- margin:30px 0 0 20px} ul.line,ul.mulitline{width:500px; background:#eee; overflow:hidden;margin-bottom:20px;border:2px solid #a40000} ul.mulitline{height:90px} li{text-indent:15px; font-size:12px; line-list-style:none} </style> <script> /******************************* * @author Mr.Think * @author blog http://mrthink.net/ * @2010.08.08 * @可自由转载及使用,但请注明版权归属 *******************************/ $(function(){ //单行应用@Mr.Think var _wrap=$('ul.line');//定义滚动区域 var _interval=2000;//定义滚动间隙时间 var _moving;//需要清除的动画 _wrap.hover(function(){ clearInterval(_moving);//当鼠标在滚动区域中时,停止滚动 },function(){ _moving=setInterval(function(){ var _field=_wrap.find('li:first');//此变量不可放置于函数起始处,li:first取值是变化的 var _h=_field.height();//取得每次滚动高度 _field.animate({marginTop:-_h+'px'},600,function(){//通过取负margin值,隐藏第一行 _field.css('marginTop',0).appendTo(_wrap);//隐藏后,将该行的margin值置零,并插入到最后,实现无缝滚动 }) },_interval)//滚动间隔时间取决于_interval }).trigger('mouseleave');//函数载入时,模拟执行mouseleave,即自动滚动 }); $(function(){ //多行应用@Mr.Think var _wrap=$('ul.mulitline');//定义滚动区域 var _interval=3000;//定义滚动间隙时间 var _moving;//需要清除的动画 _wrap.hover(function(){ clearInterval(_moving);//当鼠标在滚动区域中时,停止滚动 },function(){ _moving=setInterval(function(){ var _field=_wrap.find('li:first');//此变量不可放置于函数起始处,li:first取值是变化的 var _h=_field.height();//取得每次滚动高度 _field.animate({marginTop:-_h+'px'},600,function(){//通过取负margin值,隐藏第一行 _field.css('marginTop',0).appendTo(_wrap);//隐藏后,将该行的margin值置零,并插入到最后,实现无缝滚动 }) },_interval)//滚动间隔时间取决于_interval }).trigger('mouseleave');//函数载入时,模拟执行mouseleave,即自动滚动 }); </script> </head> <body> <h1><a href="http://www.jzxue.com/">建站学</a> @刚加载完页面后看到不效果，需按F5在刷新下页面即可看到效果.</h1> <h3>返回文章页:<a href="http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/12-4306.html">基于jQuery的上下无缝滚动应用(单行或多行)</a></h3>  <h2>单行应用</h2> <ul class="line"> <li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/10-4287.html'>JavaScript产生随机字符和数字的函数</a></li><li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/10-4285.html'>jQuery Dialog 弹出层对话框插件</a></li><li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/10-4284.html'>jquery下操作json数据的代码</a></li><li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/09-4275.html'>javascript常用正则表达式合集</a></li> </ul>  <h2>多行应用</h2> <ul class="mulitline"> <li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/12-4306.html'>基于jQuery的无缝滚动应用(单行或多行)</a></li><li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/12-4304.html'>javascript图片放大效果代码</a></li><li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/10-4293.html'>javascript模板系统 </a></li><li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/10-4287.html'>JavaScript产生随机字符和数字的函数</a></li><li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/10-4285.html'>jQuery Dialog 弹出层对话框插件</a></li><li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/10-4284.html'>jquery下操作json数据的代码</a></li><li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/09-4275.html'>javascript常用正则表达式合集</a></li><li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/08-4260.html'>JavaScript实现带自动提示的文本框效果代码</a></li><li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/08-4259.html'>jquery autocomplete自动完成插件的的使用</a></li><li><a href='http://www.jzxue.com/wangzhankaifa/javascript-ajax/201008/07-4258.html'>基于jquery的商品展示放大镜</a></li> </ul>   </body> </html>

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