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js向上无缝滚动,网站公告效果 具体代码

　　本文标签：js,无缝滚动

复制代码 代码如下:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
    <title>无标题文档</title>
    <style type="text/css">
        <!
        -- #demo
        {
            overflow: hidden;
            width: 220px;
            float: left;
            display: inline;
        }
        #demo ul
        {
            text-align: left;
            margin: 0px;
            padding: 0px;
            width: 220px;
        }
        #demo ul li
        {
            margin-left: 5px;
            display: block;
            list-style: none;
            font-size: 13px;
            height: 26px;
            padding-top: 5px;
        }
        -- ></style>
</head>
<body>

//这里的高度 style="height: 26px如果不确定的话，需要自定义输入，要不然如果定义高了而ul里的li没达到此高度会造成无法滚动
    <div id="demo" style="height: 26px;">
        <div id="demo1">
            <ul>
                <li>·<a href="http://www.jb51.net/">脚本之家1</a></li>
                <li>·<a href="http://www.jb51.net/">脚本之家2</a></li>
                <li>·<a href="http://www.jb51.net/">脚本之家3</a></li>
                <li>·<a href="http://www.jb51.net/">脚本之家4</a></li>
            </ul>
        </div>
        <div id="demo2">
        </div>

        <script type="text/javascript">
//文字无间断滚动代码，兼容IE、Firefox、Opera
var speed=60;
var FGDemo=document.getElementById(demo);
var FGDemo1=document.getElementById(demo1);
var FGDemo2=document.getElementById(demo2);
FGDemo2.innerHTML=FGDemo1.innerHTML
function Marquee1(){
if(FGDemo2.offsetHeight-FGDemo.scrollTop<=0)
FGDemo.scrollTop-=FGDemo1.offsetHeight
else{
FGDemo.scrollTop++
}
}

var MyMar1=setInterval(Marquee1,speed)
FGDemo.onmouseover=function() {clearInterval(MyMar1)}
FGDemo.onmouseout=function() {MyMar1=setInterval(Marquee1,speed)}
        </script>

    </div>
</body>
</html>