JavaScript实现走马灯效果[无缝连接、循环滚动]

JavaScript实现走马灯效果[无缝连接、循环滚动] 无缝跑马灯效果
以下代码在IE6、Firefox+Win2k环境下测试通过
网页走马灯连续循环滚动

一、向上的无缝循环滚动


HTML代码
<!-- 指向链接图片的URL -->
<base href="<a href="http://blog.netfetch.cn" target="_blank">http://blog.netfetch.cn</a>">
<div align="center" id="demo" style="overflow:hidden;height:200px;width:95px;border-width:1px 1px 1px 1px;border-style:dotted dotted dotted dotted;">
<div id="demo1">
<!-- 定义内容-->
<img src="images/logo_1.gif">
<img src="images/logo/flashempire.gif">
<img src="images/logo.gif">
<img src="images/logo/5dmedia.gif">
<img src="images/logo/macromedia.gif">
<img src="images/logo/sucaiw.gif">
<img src="images/logo/blueieda.gif">
<img src="images/logo/htmlcn.gif">
<img src="images/logo/fwcn.gif">
</div>
<div id="demo2"></div>
</div>

<script language="javascript" type="text/javascript">
<!--
var demo = document.getElementById("demo");
var demo1 = document.getElementById("demo1");
var demo2 = document.getElementById("demo2");
var speed=10; //滚动速度值，值越大速度越慢
demo2.innerHTML = demo1.innerHTML //克隆demo2为demo1
function Marquee(){
if(demo2.offsetTop-demo.scrollTop<=0) //当滚动至demo1与demo2交界时
demo.scrollTop-=demo1.offsetHeight //demo跳到最顶端
else{
demo.scrollTop++
}
}
var MyMar = setInterval(Marquee,speed); //设置定时器
demo.onmouseover = function(){clearInterval(MyMar)} //鼠标经过时清除定时器达到滚动停止的目的
demo.onmouseout = function(){MyMar = setInterval(Marquee,speed)} //鼠标移开时重设定时器
-->
</script>

[Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]

二、向下的无缝循环滚动


HTML代码
<!-- 指向链接图片的URL -->
<base href="<a href="http://blog.netfetch.cn" target="_blank">http://blog.netfetch.cn</a>">
<div align="center" id="demo" style="overflow:hidden;height:200px;width:95px;border-width:1px 1px 1px 1px;border-style:dotted dotted dotted dotted;">
<div id="demo1">
<!-- 定义内容-->
<img src="images/logo_1.gif">
<img src="images/logo/flashempire.gif">
<img src="images/logo.gif">
<img src="images/logo/5dmedia.gif">
<img src="images/logo/macromedia.gif">
<img src="images/logo/sucaiw.gif">
<img src="images/logo/blueieda.gif">
<img src="images/logo/htmlcn.gif">
<img src="images/logo/fwcn.gif">
</div>
<div id="demo2"></div>
</div>
<script language="javascript" type="text/javascript">
<!--
var demo = document.getElementById("demo");
var demo1 = document.getElementById("demo1");
var demo2 = document.getElementById("demo2");
var speed=10; //数值越大滚动速度越慢
demo2.innerHTML = demo1.innerHTML;
demo.scrollTop = demo.scrollHeight;
function Marquee(){
if(demo1.offsetTop-demo.scrollTop>=0)
demo.scrollTop+=demo2.offsetHeight
else{
demo.scrollTop--
}
}
var MyMar = setInterval(Marquee,speed);
demo.onmouseover = function(){clearInterval(MyMar)}
demo.onmouseout = function(){MyMar = setInterval(Marquee,speed)}
-->
</script>

[Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]

三、向左的无缝循环滚动


HTML代码
<!-- 指向链接图片的URL -->
<base href="<a href="http://blog.netfetch.cn" target="_blank">http://blog.netfetch.cn</a>">
<div align="center" id="demo" style="overflow:hidden;height:33px;width:500px;border-width:1px 1px 1px 1px;border-style:dotted dotted dotted dotted;">
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td id="demo1"><img src="images/logo_1.gif"><img src="images/logo/flashempire.gif"><img src="images/logo.gif"><img src="images/logo/5dmedia.gif"><img src="images/logo/macromedia.gif"><img src="images/logo/sucaiw.gif"><img src="images/logo/blueieda.gif"><img src="images/logo/htmlcn.gif" border="0"></td>
<td id="demo2"> </td>
</tr>
</table>
</div>

<script language="javascript" type="text/javascript">
<!--
var demo = document.getElementById("demo");
var demo1 = document.getElementById("demo1");
var demo2 = document.getElementById("demo2");
var speed=10; //数值越大滚动速度越慢
demo2.innerHTML = demo1.innerHTML
function Marquee(){
if(demo2.offsetWidth-demo.scrollLeft<=0)
demo.scrollLeft-=demo1.offsetWidth
else{
demo.scrollLeft++
}
}
var MyMar = setInterval(Marquee,speed);
demo.onmouseover = function(){clearInterval(MyMar)}
demo.onmouseout = function(){MyMar = setInterval(Marquee,speed)}
-->
</script>

[Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]

四、向右的无缝循环滚动


HTML代码
<!-- 指向链接图片的URL -->
<base href="<a href="http://blog.netfetch.cn" target="_blank">http://blog.netfetch.cn</a>">
<div align="center" id="demo" style="overflow:hidden;height:33px;width:500px;border-width:1px 1px 1px 1px;border-style:dotted dotted dotted dotted;">
<table border="0" cellspacing="0" cellpadding="0">
<tr>
<td id="demo1"><img src="images/logo_1.gif"><img src="images/logo/flashempire.gif"><img src="images/logo.gif"><img src="images/logo/5dmedia.gif"><img src="images/logo/macromedia.gif"><img src="images/logo/sucaiw.gif"><img src="images/logo/blueieda.gif"><img src="images/logo/htmlcn.gif" border="0"></td>
<td id="demo2"> </td>
</tr>
</table>
</div>

<script language="javascript" type="text/javascript">
<!--
var demo = document.getElementById("demo");
var demo1 = document.getElementById("demo1");
var demo2 = document.getElementById("demo2");
var speed=10; //数值越大滚动速度越慢
demo2.innerHTML = demo1.innerHTML;
demo.scrollLeft = demo.scrollWidth;
function Marquee(){
if(demo.scrollLeft<=0)
demo.scrollLeft+=demo2.offsetWidth
else{
demo.scrollLeft--
}
}
var MyMar = setInterval(Marquee,speed)
demo.onmouseover = function(){clearInterval(MyMar)}
demo.onmouseout = function(){MyMar = setInterval(Marquee,speed)}
-->
</script>

[Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]