jQuery不间断滚动效果(模拟百度新闻支持文字/图片/垂直滚动)


Posted in Javascript onFebruary 05, 2013

一、jQuery.roll 插件使用说明
jQuery.roll 是模拟百度新闻不间断滚动效果,并支持文字、图片水平垂直滚动,该函数使用方法为:

/* 
* @module jQuery roll 
* @param: contentCls 内容容器className 
* @param: contentParentId 内容容器父元素节点ID 
* @param: configs 配置参数 
* 
* @config: effect 滚动效果 
* @config: duration 滚动1个像素的运行时间(毫秒数) 
* @config: delay 开始滚动的延迟时间(毫秒数) 
* 
*/ 
jQuery.roll(contentCls, contentParentId, configs);

二、函数源码
jQuery.extend({ 
roll: function(contentCls, contentParentId, configs){ 
var setTimeID, totalWidth = 0, totalHeight = 0, 
firstContent, secondContent, contents; 
(function(){ 
var singleContent, cloneContent, nodeList; 
singleContent = $(contentCls, contentParentId); 
nodeList = singleContent.children(); 
if (configs.effect === 'scrollX') { 
$.each(nodeList, function(idx, itm) { 
totalWidth += $(itm).outerWidth(true); 
}); 
singleContent.css({ 'width': totalWidth + 'px' }); 
} 
else if (configs.effect === 'scrollY') { 
$.each(nodeList, function(idx, itm) { 
totalHeight += $(itm).outerHeight(true); 
}); 
singleContent.css({ 'height': totalHeight + 'px' }); 
} 
cloneContent = singleContent.clone(); 
cloneContent.appendTo(contentParentId); 
contents = $(contentCls, contentParentId); 
firstContent = contents[0]; 
secondContent = contents[1]; 
if (configs.effect === 'scrollX') { 
$(firstContent).css({ 'left': 0 }); 
$(secondContent).css({ 'left': totalWidth + 'px' }); 
} 
else if (configs.effect === 'scrollY') { 
$(firstContent).css({ 'top': 0 }); 
$(secondContent).css({ 'top': totalHeight + 'px' }); 
} 
})() 
function cssAnimate(){ 
if (configs.effect === 'scrollX') { 
$(firstContent).css({ left: parseInt(firstContent.style.left, 10) - 1 + 'px' }); 
$(secondContent).css({ left: parseInt(secondContent.style.left, 10) - 1 + 'px' }); 
$.each(contents, function(idx, itm) { 
if (parseInt(itm.style.left,10) === -totalWidth) { 
$(itm).css({ left: totalWidth + 'px' }); 
} 
}); 
} 
else if (configs.effect === 'scrollY') { 
$(firstContent).css({ top: parseInt(firstContent.style.top, 10) - 1 + 'px' }); 
$(secondContent).css({ top: parseInt(secondContent.style.top, 10) - 1 + 'px' }); 
$.each(contents, function(idx, itm) { 
if (parseInt(itm.style.top,10) === -totalHeight) { 
$(itm).css({ top: totalHeight + 'px' }); 
} 
}); 
} 
setTimeId = setTimeout(cssAnimate, configs.duration); 
} 
function rollRun(){ 
setTimeId = setTimeout(cssAnimate, configs.delay); 
return jQuery; 
} 
function rollStop(){ 
clearTimeout(setTimeId); 
return jQuery; 
} 
return $.extend({ 
rollRun: rollRun, 
rollStop: rollStop 
}); 
} 
});

三、完整demo源码
例3.1
<!DOCTYPE html> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> 
<meta name="description" content="jQuery实现无间隙滚动效果"> 
<title>jQuery demo</title> 
<style> 
body { font: 12px/1.5 tahoma,"microsoft yahei","微软雅黑E\8F6F\96C5\9ED1"; } 
body, div, ul, li, h1 { margin: 0; padding: 0; } 
.news { margin: 100px 0 0 100px; } 
.news ul { list-style: none; } 
.news-box { width: 600px; margin-left: 20px; height: 24px; background-color: #fcfcfd; overflow: hidden; position: relative; _zoom: 1; } 
.news h1 { margin-bottom: 15px; padding-left: 20px; color: #370188; } 
.news-list { position: absolute; } 
.news-list { float: left; } 
.news-list li { float: left; _display: inline; margin-right: 15px; height: 24px; line-height: 24px; overflow: hidden; word-wrap: normal; } 
.news-list li a { text-decoration: none; color: #000; } 
.news-list li a:hover { 
-webkit-transition: color .2s linear,background-color .3s linear; 
-moz-transition: color .2s linear,background-color .3s linear; 
-ms-transition: color .2s linear,background-color .3s linear; 
-o-transition: color .2s linear,background-color .3s linear; 
transition: color .2s linear,background-color .3s linear; 
color: #FF4400; 
text-decoration: underline; 
} 
.news-list li a:visited { color: #290065; } 
</style> 
<script src="http://code.jquery.com/jquery-latest.js"></script> 
</head> 
<body> 
<div id="J_news" class="news"> 
<h1>文字列表滚动</h1> 
<div id="J_Roll_Container" class="news-box"> 
<ul class="J_Roll_Content news-list"> 
<li><a href="http://news.sina.com.cn/c/2013-01-10/121926003955.shtml" target="_blank">日方否认将对中国巡航钓鱼岛飞机</a></li> 
<li><a href="http://news.hf365.com/system/2013/01/10/012875943.shtml" target="_blank">日本防卫省否认将对中国飞机警告射击(图)</a></li> 
<li><a href="http://news.21cn.com/world/guojisaomiao/2013/01/10/14338977.shtml" target="_blank">日否认警告射击中海监飞机 恐中日因夺岛开战</a></li> 
</ul> 
</div> 
</div> 
<script> 
// 这里引用jQuery.roll代码 
</script> 
<script> 
$(function(){ 
var roll_jQuery, contents; 
roll_jQuery = $.roll('.J_Roll_Content', '#J_Roll_Container', { effect: 'scrollX', duration: 40, delay: 500 }).rollRun(); 
contents = $('.J_Roll_Content'); 
contents.bind('mouseenter', function(){ 
roll_jQuery.rollStop(); 
}); 
contents.bind('mouseleave', function(){ 
roll_jQuery.rollRun(); 
}); 
}); 
</script> 
</body> 
</html>

例3.2
View Code 
<!DOCTYPE html> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> 
<meta name="description" content="jQuery实现无间隙滚动效果"> 
<title>jQuery demo</title> 
<style> 
body { font: 12px/1.5 tahoma, "microsoft yahei", "微软雅黑E\8F6F\96C5\9ED1"; } 
body, div, ul, li, h1 { margin: 0; padding: 0; } 
.news { margin: 100px 0 0 100px; } 
.news ul { list-style: none; } 
.news-box { padding: 20px; width: 310px; height: 192px; background-color: #fcfcfd; overflow: hidden; position: relative; } 
.news h1 { margin-bottom: 15px; padding-left: 20px; color: #370188; } 
.news-list { position: absolute; } 
.news-list li { width: 100%; height: 24px; line-height: 24px; overflow: hidden; word-wrap: normal; } 
.news-list li a { text-decoration: none; color: #000; } 
.news-list li a:hover { 
-webkit-transition: color .2s linear, background-color .3s linear; 
-moz-transition: color .2s linear, background-color .3s linear; 
-ms-transition: color .2s linear, background-color .3s linear; 
-o-transition: color .2s linear, background-color .3s linear; 
transition: color .2s linear, background-color .3s linear; 
color: #FF4400; 
text-decoration: underline; 
} 
.news-list li a:visited { color: #290065; } 
</style> 
<script src="http://code.jquery.com/jquery-latest.js"></script> 
</head> 
<body> 
<div id="J_news" class="news"> 
<h1>文字列表滚动</h1> 
<div id="J_Roll_Container" class="news-box"> 
<ul class="J_Roll_Content news-list"> 
<li><a href="http://news.ifeng.com/world/detail_2013_01/11/21098447_0.shtml" target="_blank">在澳中国留学生涉嫌接送非法色情业者赚外快被罚</a></li> 
<li><a href="http://news.qq.com/a/20130111/000993.htm" target="_blank">印度北部等今冬遭遇极寒天气 已致数百人被冻死</a></li> 
<li><a href="http://news.qq.com/a/20130111/001251.htm" target="_blank">意大利警方禁止挂中国红灯笼 被指危险引燃物</a></li> 
<li><a href="http://news.sina.com.cn/c/2013-01-10/121926003955.shtml" target="_blank">日方否认将对中国巡航钓鱼岛飞机</a></li> 
<li><a href="http://news.hf365.com/system/2013/01/10/012875943.shtml" target="_blank">日本防卫省否认将对中国飞机警告射击(图)</a></li> 
<li><a href="http://news.21cn.com/world/guojisaomiao/2013/01/10/14338977.shtml" target="_blank">日否认警告射击中海监飞机 恐中日因夺岛开战</a></li> 
<li><a href="http://military.people.com.cn/n/2013/0110/c1011-20150261.html" target="_blank">传解放军举行长白山军演</a></li> 
<li><a href="http://news.21cn.com/world/guojisaomiao/2013/01/10/14335623.shtml" target="_blank">中国高新6号反潜机问世 反潜艇性能优于美军P-3C</a></li> 
<li><a href="http://opinion.huanqiu.com/opinion_world/2013-01/3467875.html" target="_blank">张建刚:2030年中国将圆海洋强国梦</a></li> 
<li><a href="http://news.hf365.com/system/2013/01/10/012873928.shtml" target="_blank">运-20现身试飞中心 可取代伊尔-76任何功能</a></li> 
<li><a href="http://mil.sohu.com/20130110/n362988784.shtml" target="_blank">东海舰队引入大批无人机 饱和攻击让日难以招架</a></li> 
</ul> 
</div> 
</div> 
<script> 
jQuery.extend({ 
roll: function(contentCls, contentParentId, configs){ 
var setTimeID, totalWidth = 0, totalHeight = 0, 
firstContent, secondContent, contents; 
(function(){ 
var singleContent, cloneContent, nodeList; 
singleContent = $(contentCls, contentParentId); 
nodeList = singleContent.children(); 
if (configs.effect === 'scrollX') { 
$.each(nodeList, function(idx, itm) { 
totalWidth += $(itm).outerWidth(true); 
}); 
singleContent.css({ 'width': totalWidth + 'px' }); 
} 
else if (configs.effect === 'scrollY') { 
$.each(nodeList, function(idx, itm) { 
totalHeight += $(itm).outerHeight(true); 
}); 
singleContent.css({ 'height': totalHeight + 'px' }); 
} 
cloneContent = singleContent.clone(); 
cloneContent.appendTo(contentParentId); 
contents = $(contentCls, contentParentId); 
firstContent = contents[0]; 
secondContent = contents[1]; 
if (configs.effect === 'scrollX') { 
$(firstContent).css({ 'left': 0 }); 
$(secondContent).css({ 'left': totalWidth + 'px' }); 
} 
else if (configs.effect === 'scrollY') { 
$(firstContent).css({ 'top': 0 }); 
$(secondContent).css({ 'top': totalHeight + 'px' }); 
} 
})() 
function cssAnimate(){ 
if (configs.effect === 'scrollX') { 
$(firstContent).css({ left: parseInt(firstContent.style.left, 10) - 1 + 'px' }); 
$(secondContent).css({ left: parseInt(secondContent.style.left, 10) - 1 + 'px' }); 
$.each(contents, function(idx, itm) { 
if (parseInt(itm.style.left,10) === -totalWidth) { 
$(itm).css({ left: totalWidth + 'px' }); 
} 
}); 
} 
else if (configs.effect === 'scrollY') { 
$(firstContent).css({ top: parseInt(firstContent.style.top, 10) - 1 + 'px' }); 
$(secondContent).css({ top: parseInt(secondContent.style.top, 10) - 1 + 'px' }); 
$.each(contents, function(idx, itm) { 
if (parseInt(itm.style.top,10) === -totalHeight) { 
$(itm).css({ top: totalHeight + 'px' }); 
} 
}); 
} 
setTimeId = setTimeout(cssAnimate, configs.duration); 
} 
function rollRun(){ 
setTimeId = setTimeout(cssAnimate, configs.delay); 
return jQuery; 
} 
function rollStop(){ 
clearTimeout(setTimeId); 
return jQuery; 
} 
return $.extend({ 
rollRun: rollRun, 
rollStop: rollStop 
}); 
} 
}); 
</script> 
<script> 
$(function(){ 
var roll_jQuery, contents; 
roll_jQuery = $.roll('.J_Roll_Content', '#J_Roll_Container', { effect: 'scrollY', duration: 40, delay: 500 }).rollRun(); 
contents = $('.J_Roll_Content'); 
contents.bind('mouseenter', function(){ 
roll_jQuery.rollStop(); 
}); 
contents.bind('mouseleave', function(){ 
roll_jQuery.rollRun(); 
}); 
}); 
</script> 
</body> 
</html>
Javascript 相关文章推荐
javascript检查日期格式的函数[比较全]
Oct 17 Javascript
JavaScript 事件参考手册
Dec 24 Javascript
offsetParent 算法分析
Apr 05 Javascript
JS修改iframe页面背景颜色的方法
Apr 01 Javascript
javascript字符串循环匹配实例分析
Jul 17 Javascript
轻松实现JavaScript图片切换
Jan 12 Javascript
jQuery bt气泡实现悬停显示及移开隐藏功能的方法
Jul 12 Javascript
Node.js中使用jQuery的做法
Aug 17 Javascript
使用vue-resource进行数据交互的实例
Sep 02 Javascript
详解微信小程序用定时器实现倒计时效果
Apr 30 Javascript
详解Webpack4多页应用打包方案
Jul 16 Javascript
Vue Element-ui表单校验规则实现
Jul 09 Vue.js
得到jQuery detach()后节点中的某个值实现代码
Feb 05 #Javascript
jquery zTree异步加载简单实例分享
Feb 05 #Javascript
JS打印gridview实现原理及代码
Feb 05 #Javascript
漂亮的jquery提示效果(仿腾讯弹出层)
Feb 05 #Javascript
Js 获取Gridview选中行的内容操作步骤
Feb 05 #Javascript
6款经典实用的jQuery小插件及源码(对话框/提示工具等等)
Feb 04 #Javascript
jquery插件实现鼠标经过图片右侧显示大图的效果(类似淘宝)
Feb 04 #Javascript
You might like
PHP分页显示制作详细讲解
2006/12/05 PHP
基于PHP Web开发MVC框架的Smarty使用说明
2013/04/19 PHP
json 定义
2008/06/10 Javascript
Mootools 1.2教程 Tooltips
2009/09/15 Javascript
jquery animate图片模向滑动示例代码
2011/01/26 Javascript
jquery Mobile入门—多页面切换示例学习
2013/01/08 Javascript
7款风格新颖的jQuery/CSS3菜单导航分享
2013/04/23 Javascript
Javascript 高阶函数使用介绍
2015/06/15 Javascript
jquery实现的Accordion折叠面板效果代码
2015/09/02 Javascript
JS 学习总结之正则表达式的懒惰性和贪婪性
2017/07/03 Javascript
Vue实例中生命周期created和mounted的区别详解
2017/08/25 Javascript
打字效果动画的4种实现方法(超简单)
2017/10/18 Javascript
详解vue移动端日期选择组件
2018/02/22 Javascript
MVVM 双向绑定的实现代码
2018/06/21 Javascript
JS数组降维的实现Array.prototype.concat.apply([], arr)
2020/04/28 Javascript
[00:10]神之谴戒
2019/03/06 DOTA
Python科学计算环境推荐——Anaconda
2014/06/30 Python
python编写简易聊天室实现局域网内聊天功能
2018/07/28 Python
Python中logging.NullHandler 的使用教程
2018/11/29 Python
对python产生随机的二维数组实例详解
2018/12/13 Python
在python中利用dict转json按输入顺序输出内容方式
2020/02/27 Python
全面介绍python中很常用的单元测试框架unitest
2020/12/14 Python
使用phonegap进行本地存储的实现方法
2017/03/31 HTML / CSS
荷兰街头时尚之家:Funkie House
2019/03/18 全球购物
美国购买隐形眼镜网站:Lenses For Less
2020/07/05 全球购物
介绍下WebSphere的安全性
2013/01/31 面试题
机械电子工程专业推荐信范文
2013/11/20 职场文书
构建和谐校园倡议书
2015/01/19 职场文书
教师师德工作总结2015
2015/07/22 职场文书
重温经典:乔布斯在斯坦福大学的毕业演讲(双语)
2019/08/26 职场文书
详解java如何集成swagger组件
2021/06/21 Java/Android
python调用ffmpeg命令行工具便捷操作视频示例实现过程
2021/11/01 Python
Kubernetes部署实例并配置Deployment、网络映射、副本集
2022/04/01 Servers
Nginx 常用配置
2022/05/15 Servers
JS函数式编程实现XDM一
2022/06/16 Javascript
Redis过期数据是否会被立马删除
2022/07/23 Redis