jQuery实现公告无限循环滚动

jQuery代码 转自：http://www.cnblogs.com/qianduanzu/archive/2012/05/10/2493903.html


//第二版：Newton改造
(function (win){
var callboarTimer;
var callboard = $('#callboard');
var callboardUl = callboard.find('ul');
var callboardLi = callboard.find('li');
var liLen = callboard.find('li').length;
var initHeight = callboardLi.first().outerHeight(true);

win.autoAnimation = function (){
if (liLen <= 1) return;
var self = arguments.callee;
var callboardLiFirst = callboard.find('li').first();
callboardLiFirst.animate({
marginTop:-initHeight
}, 500, function (){
clearTimeout(callboarTimer);
callboardLiFirst.appendTo(callboardUl).css({marginTop:0});
callboarTimer = setTimeout(self, 5000);
});
}

callboard.mouseenter(
function (){
clearTimeout(callboarTimer);
}).mouseleave(function (){
callboarTimer = setTimeout(win.autoAnimation, 5000);
});
}(window));
setTimeout(window.autoAnimation, 5000);

HTML代码：

<div id="callboard">
<ul>
<li>
<a href="http://www.qianduanzu.com/2012042036.html">公告：前端组主题正在整理中..有需要用的朋友请留个言，以方便及时通知！</a>
</li>
<li>
<span style="color:red;">公告：前端组上线一个月零八天，PR升为3，BD权重1</span>
</li>
</ul>

CSS代码：(可根据需求另设)

#callboard { height:24px; line-height:24px; overflow:hidden;}
#callboard ul { padding:0;}
#callboard li { padding:0;