常用轮播图-上下 

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>上下轮播</title>
<style>
ul,ol,li{margin:0; padding:0;}
li{list-style: none;}    
img{display:block; border: 0;}
ul{ position: absolute; top: 0px;}
ol li{ float: left; font-size: 30px; padding-right: 10px; cursor:pointer;}
div{width:810px; height:320px; overflow: hidden; position: relative;}
div ol{ position: absolute; bottom: 0px; right: 0px;}
.active{ color: red;}
</style>
<script src="startMove.js"></script>
<script>
window.onload=function(){
    var div=document.getElementsByTagName('div')[0];
    var ul=document.getElementsByTagName('ul')[0];
    var aBtn=document.getElementsByTagName('ol')[0].getElementsByTagName('li');
    var now=0;
    for(var i=0; i<aBtn.length; i++){
        aBtn[i].index=i;
        aBtn[i].onclick=function(){
            now=this.index;
            tab();
        }
    }
    function tab(){
        for(var i=0; i<aBtn.length; i++){
            aBtn[i].className=i==now?'active':'';
        }
        //ul.style.top=-320*now+'px';
        startMove(ul,{top:-320*now});
    }
    function next(){
        now++;
        if(now==aBtn.length)now=0;
        tab();
    }
    var timer=setInterval(next, 3000);
    div.onmouseover=function(){
        clearInterval(timer);
    }
    div.onmouseout=function(){
        timer=setInterval(next, 3000);
    }
}
</script>
</head>
<body>
<div>
    <ul>
        <li><img src="img/001.jpg" /></li>
        <li><img src="img/002.jpg" /></li>
        <li><img src="img/003.jpg" /></li>
        <li><img src="img/004.jpg" /></li>
    </ul>
    <ol>
        <li class="active">●</li>
        <li>●</li>
        <li>●</li>
        <li>●</li>
    </ol>
</div>    
</body>
</html>

 

posted @ 2017-05-04 14:20  噶尔丹  阅读(310)  评论(0)    收藏  举报