原生js和css实现图片轮播效果
本文实例为大家分享了javascript图片轮播效果的具体代码，供大家参考，具体内容如下
<!DOCTYPE HTML>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<title>图片轮播</title>
<style>
#box {
width:506px;
height:306px;
margin: 20px auto;
border:3px solid black;
position:relative;
background-color:orange;
overflow: hidden;
/*overflow: hidden;*/
}
.pic {
position: absolute;
width:500px;
height:300px;
line-height: 300px;
text-align: center;
font-size: 100px;
color:white;
bottom:0;
}
.red {
background-color:red;
}
.green {
background-color:green;
}
.blue {
background-color:blue;
}
.orange{
background-color: orange;
}
.move {
bottom:300px;
transition:bottom 3s; /* 设置图片移动消耗的时间*/
}
</style>
</head>
<body>
<div id="box">
<div id="pic1" class="pic red">1</div>
<div id="pic2" class="pic green">2</div>
<div id="pic3" class="pic blue">3</div>
<div id="pic3" class="pic orange">4</div>
</div>
<script>
window.addEventListener('load',function(){
var pics = document.getElementsByClassName('pic');
//为每个pic元素设置z-index的值
for(let i=0;i<pics.length;i++){
pics[i].style.zIndex = pics.length-i;
}
//循环播放图片的函数
var loopPics = (function(){
var index=0;
return function(pics,delay){
var recall = function(pic){
//给图片增加move类，调用css的transition属性播放移动动画
pic.className += ' move';
setTimeout(function(){
//取消图片的move类，图片返回原位
pic.className=pic.className.replace(' move','');
//改变图片组的堆叠顺序。最外的图片放到最下面，其他图片依次向外移动
for(let i=0;i<pics.length;i++){
if(pics[i].style.zIndex==pics.length){
pics[i].style.zIndex=1;
} else {
pics[i].style.zIndex=pics[i].style.zIndex*1+1;
}
}
index++;
if(index==pics.length) index=0;
recall(pics[index]);
},delay);
};
recall(pics[index]);
};
})();
//调用函数，循环播放。delay的时间需要大于等于css动画里设置的图片移动时间
loopPics(pics,4000);
});
</script>
</body>
</html>