无缝滚动

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效果图：

html 代码：

<</SPAN>html>
<</SPAN>head lang="en">
    <</SPAN>meta charset="UTF-8">
    <</SPAN>title>无缝滚动</</SPAN>title>
    <</SPAN>script src="js/0010.js"></</SPAN>script>
    <</SPAN>link rel="stylesheet" type="text/css" href="css/0010.css" />
</</SPAN>head>
<</SPAN>body>
   <</SPAN>a href="javascript:">向左走</</SPAN>a>
   <</SPAN>a href="javascript:">向右走</</SPAN>a>
   <</SPAN>div id="div1">
       <</SPAN>ul>
           <</SPAN>li><</SPAN>img src="image/1.jpg"></</SPAN>li>
           <</SPAN>li><</SPAN>img src="image/2.jpg"></</SPAN>li>
           <</SPAN>li><</SPAN>img src="image/3.jpg"></</SPAN>li>
           <</SPAN>li><</SPAN>img src="image/4.jpg"></</SPAN>li>
       </</SPAN>ul>
   </</SPAN>div>
</</SPAN>body>
</</SPAN>html>

*{

    margin:0;

    padding: 0;

}

#div1{

    overflow: hidden;

    background: blue;

    position: relative;

    width: 600px;

    height: 150px;

    margin:100px auto;

}

#div1 ul{

    position: absolute;

    left: 0px;

    top: 0px;

    list-style: none;

}

#div1 ul li{

    float: left;

}

#div1 ul li img{

    width:150px;

    height:150px;

}

js：代码
window.onload=function(){

    var oDiv=document.getElementById(‘div1‘);

    var oUl=oDiv.getElementsByTagName(‘ul‘)[0];

    var aLi=oUl.getElementsByTagName(‘li‘);

    var timer=null;

    var speed=2;//控制滚动速度以及方向
    oUl.innerHTML=oUl.innerHTML+oUl.innerHTML;

    oUl.style.width=aLi[0].offsetWidth*aLi.length+‘px‘;

    timer=setInterval(move,30);



    oDiv.onmouseover=function(){//鼠标移入暂定
        clearInterval(timer);

    };

    oDiv.onmouseout=function(){//鼠标移出继续滚动
        timer=setInterval(move,30);

    }



    document.getElementsByTagName(‘a‘)[0].onclick=function(){

        speed=-2;

    }

    document.getElementsByTagName(‘a‘)[1].onclick=function(){

        speed=2;

    }



    function move(){//图片滚动
        if(oUl.offsetLeft<-oUl.offsetWidth/2){

            oUl.style.left=0;

        }

        if(oUl.offsetLeft>0){

            oUl.style.left=-oUl.offsetWidth/2+‘px‘;

        }

        oUl.style.left=oUl.offsetLeft+speed+‘px‘;

    }



}

无缝滚动

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原文地址：http://www.cnblogs.com/ttsy/p/4195267.html