<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
*{
margin: 0;
padding: 0;
}
a{
text-decoration: none;
}
.wrap{
width: 1000px;
height: 800px;
background: url(img/bg.jpg) no-repeat;
position: absolute;
left: 50%;
top: 50%;
margin-left: -500px;
margin-top: -400px;
}
#prev,#next{
position: absolute;
width: 25px;
height: 45px;
background: url(img/ar.png) no-repeat;
top: 155px;
}
#prev{
left: 13px;
}
#next{
transform: rotate(180deg);
right: 13px;
}
.pic{
width: 536px;
height: 356px;
position: absolute;
top: 170px;
left: 297px;
}
img{
vertical-align: top;
width: 536px;
height: 356px;
}
#txt{
width: 536px;
height: 71px;
position: absolute;
left: 297px;
bottom: 185px;
text-align: center;
font: 20px/71px "微软雅黑";
color: #666;
}
</style>
</head>
<body>
<div class="wrap">
<div class="pic">
<img id="img" src="img/1.jpg" alt="">
</div>
<p id="txt">这是第 <span>1</span> 张图片</p>
</div>
<script>
var pic = document.querySelector('img');
var imgs = ['img/1.jpg', 'img/2.jpg', 'img/3.jpg', 'img/4.jpg', 'img/5.jpg'];
var num = 0;
setInterval(function(){
num++;
if(num >= imgs.length){
num = 0;
}
pic.src = imgs[num];
},1000)
</script>
</body>
</html>
