轮播图
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2023-12-30 16:22:04
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轮播图
roll.html
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<link rel="stylesheet" type="text/css" href="roll.css">
</head>
<body>
<div class="plate">
<img src="images/img1.jpg" style="display:block" alt="">
<img src="images/img2.jpg" alt="">
<img src="images/img3.jpg" alt="">
<img src="images/img4.jpg" alt="">
<ul>
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
</div>
<script src="roll.js"></script>
</body>
</html>
roll.css
*{
margin: 0;
padding: 0;
}
.plate{
width: 520px;
height: 280px;
border: 2px solid red;
margin: 20px auto;
position: relative;
}
.plate img{
float:left;
overflow: hidden;
position: absolute;
}
.plate ul{
position: absolute;
left: 230px;
bottom: 20px;
}
.plate ul li{
list-style: none;
width: 16px;
height: 16px;
border-radius: 50%;
float: left;
background-color: #999;
margin-right: 8px;
}
roll.js
var plate = document.getElementsByClassName('plate')[0];
var list = plate.getElementsByTagName('li');
var imgs = plate.getElementsByTagName('img');
var count = 0;
setInterval(function(){
count++;
count = (count == 4? 0 : count);
for(var i =0, len = list.length; i < len; i++){
imgs[i].style.display = 'none';
list[i].style.background = '#999';
}
imgs[count].style.display = 'block';
list[count].style.background = 'red';
}, 1000);