<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>动态切换图片</title>
</head>
<style>
ul{
padding:0;margin:0;
}
li{
list-style: none;
}
#pic{
position: relative;
width: 400px;
height: 400px;
background-color:red;
margin:100px auto;
background:url('image/1.jpg') no-repeat center;
}
#pic img{
width: 400px;
height: 400px;
}
#pic ul{
width: 50px;
position: absolute;
top: 0;
right: -70px;
}
li{
width: 40px;
height: 40px;
margin-bottom:10px;
background-color: pink;
float: left;
}
#pic span{
position: absolute;
bottom: 10px;
left: 0;
}
#pic p,#pic span{
width: 400px;
height: 20px;
}
#pic p{
position: absolute;
top: 10px;
left: 0;
}
.active{
background-color: red;
}
</style>
<body>
<div id="pic">
<img src="" alt="">
<p>qwrwe</p>
<span>werwer</span>
<ul>
</ul>
</div>
<script>
window.onload=function(){
//存放旧li
var oldLi=null;
var num=0;
var oPic = document.getElementById('pic');
var oImg = oPic.getElementsByTagName('img')[0];
var oUL = oPic.getElementsByTagName('ul')[0];
var oSpan= oPic.getElementsByTagName('span')[0];
var oP = oPic.getElementsByTagName('p')[0];
var oLi= oUL.getElementsByTagName('li');
var arr=['image/1.jpg','image/2.jpg','image/3.jpg','image/4.jpg'];
var aText = ['图片1','图片2','图片3','图片4'];
for(var i=0;i<arr.length;i++){
//动态添加元素
oUL.innerHTML+='<li></li>';
}
// 旧li就等于当前的
oldLi=oLi[num];
// 初始化
oImg.src=arr[num];
oP.innerHTML=num+1+'/'+arr.length;
oSpan.innerHTML=aText[num];
oLi[num].className='active';
for(var i=0;i<arr.length;i++){
// 给元素自定义属性
//
oLi[i].index=i;
oLi[i].onclick=function(){
// 当元素被点击时图片文字信息都一起变化
oImg.src=arr[this.index];
oP.innerHTML=1+this.index+'/'+arr.length;
oSpan.innerHTML=aText[this.index];
// 清空上一个 当前添加
oldLi.className='';
//将上一个给当前
oldLi=this;
this.className='active';
}
}
}
</script>
</body>
</html>
实现效果
