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How to implement the html carousel image: first use a control as the image display area, and the images are displayed in the same area; then write a traversal function through Js to display only one image at a time; finally Just call this function every once in a while through a timer.
The operating environment of this tutorial: windows7 system, html5 version, DELL G3 computer.
How to implement html carousel images:
1. Use a control as the image display area, and the images are displayed in the same area;
2. Write a traversal function through Js to display only one picture at a time, such as style = " display: none " You can hide other pictures;
3. Through a timer Call this function every once in a while;
4. The pictures tested here are manually added addresses, which can be added cyclically according to actual needs;
Html, Javascript:
<!-- 语言: Html、Css、Javascript -->
<!-- 工具: HbuilderX -->
<!-- 使用Ctrl+/ 可快速多行注释/取消注释 -->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>轮播图测试</title>
<!-- 外部导入Css文件，链接式 -->
<link type="text/css" rel="stylesheet" href="css/slideShow.css"/>
</head>
<body>
<p>测试轮播图</p>
<hr id="hr1"/>
<!-- 建立一个div控件作为图片框 -->
<div class="imgBox">
<!-- alt：图片路径失败时替换显示内容 -->
<img class="img-slide img" src="img/img1.jpg" alt="img1">
<img class="img-slide img" src="img/img2.jpg" alt="img2">
<img class="img-slide img" src="img/img3.jpg" alt="img3">
<img class="img-slide img" src="img/img4.jpg" alt="img4">
<img class="img-slide img" src="img/img5.jpg" alt="img5">
</div>
</body>
<script type="text/javascript">
// index：索引， len：长度
var index = 0, len;
// 类似获取一个元素数组
var imgBox = document.getElementsByClassName("img-slide");
len = imgBox.length;
imgBox[index].style.display = 'block';
// 逻辑控制函数
function slideShow() {
index ++;
// 防止数组溢出
if(index >= len) index = 0;
// 遍历每一个元素
for(var i=0; i<len; i++) {
imgBox[i].style.display = 'none';
}
// 每次只有一张图片显示
imgBox[index].style.display = 'block';
}
// 定时器，间隔3s切换图片
setInterval(slideShow, 3000);
</script>
</html>Css:
/* 标签选择器 */
p {
text-align: center;
font-size: 25px;
color: cadetblue;
font-family: fantasy;
}
/* id选择器 */
#hr1 {
background-color: cadetblue;
height: 2px;
width: 75%;
}
/* 类选择器 */
.imgbox {
border-top: 5px solid cadetblue;
/* 避免因窗口变化影响图片效果 */
width: 60%;
height: 40%;
margin: 0 auto;
}
.img {
width: 60%;
height: 40%;
margin: 0 auto;
display: none;
}Running effect:
Related learning recommendations: html video tutorial
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