这个轮播效果为啥出不来呢 跟着他写的
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
body{ margin: 0;padding: 0px; }
#container { width:auto ; height: 400px; overflow: hidden; position: relative;}
#list { width:11200px; height: 400px; position: absolute; z-index: 1;}
#list img { width: 1600px; height: 400px; float: left;}
#buttons { position: absolute; height: 10px; width: 100px; z-index: 2; bottom: 20px; left: 750px;}
#buttons span { cursor: pointer; float: left; border: 1px solid #fff; width: 10px; height: 10px; border-radius: 50%; background: #333; margin-right: 5px;}
#buttons .on { background: orangered;}
.arrow { cursor: pointer; display: none;text-decoration: none; line-height: 39px; text-align: center; font-size: 36px; font-weight: bold; width: 40px; height: 40px; position: absolute; z-index: 2; top: 180px; background-color:rgba(0,0,0,.3); color: #fff;}
.arrow:hover { background-color: rgba(0,0,0,.7);}
#container:hover .arrow { display: block;}
#prev { left: 20px;}
#next { right: 20px;}
</style>
<script type="text/javascript">
window.onload =function(){
var container =document.getElementByld( 'container');
var list =document.getElementByld( 'list');
var buttons =document.getElementByld('bittons').getElementsByTagName('span' );
var prev =document.getElementByld( 'prev');
var next =document.getElementByld( 'next');
function animate(offset) {
list.style.left = parseint('list.style.left')+ offset +'px';
}
next.onclick = function(){
animato(-1600);
}
next.onclick = function(){
animato(1600);
}
}
</script>
</head>
<body>
<div id="container">
<div id="list" style="left: -1600px;">
<img src="11223.png" alt="1"/>
<img src="11223.png" alt="1"/>
<img src="11233.png" alt="2"/>
<img src="1123.png" alt="3"/>
<img src="1123.png" alt="4"/>
<img src="1123.png" alt="5"/>
<img src="1123.png" alt="5"/>
</div>
<div id="buttons">
<span index="1" class="on"></span>
<span index="2"></span>
<span index="3"></span>
<span index="4"></span>
<span index="5"></span>
</div>
<a href="javascript:;" id="prev" class="arrow"><</a>
<a href="javascript:;" id="next" class="arrow">></a>
</div>
</body>
</html>
