html轮播图自动切换代码
时间: 2023-12-23 11:26:53 浏览: 40
以下是一个简单的HTML网页图片轮播切换的自动切换代码,其中包括必须的HTML元素、CSS代码和JavaScript代码:
```html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>自动轮播图</title>
<style>
#slider {
width: 600px;
height: 400px;
position: relative;
overflow: hidden;
}
#slider img {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
display: none;
}
</style>
</head>
<body>
<div id="slider">
<img src="img1.jpg" alt="图片1">
<img src="img2.jpg" alt="图片2">
<img src="img3.jpg" alt="图片3">
</div>
<script>
var slider = document.getElementById("slider");
var imgs = slider.getElementsByTagName("img");
var len = imgs.length;
var index = 0;
var timer;
function showImg(index) {
for (var i = 0; i < len; i++) {
imgs[i].style.display = "none";
}
imgs[index].style.display = "block";
}
function autoPlay() {
timer = setInterval(function() {
index++;
if (index == len) {
index = 0;
}
showImg(index);
}, 2000);
}
autoPlay();
</script>
</body>
</html>
```
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