<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<style rel="stylesheet">
body {
margin: 0;
padding: 0
}
.imgwall {
position: relative;
overflow: hidden;
margin: 0 auto
}
.imgwall ul {
position: absolute;
list-style: none;
padding: 0;
margin: 0;
left: 0
}
.imgwall li {
float: left
}
.imgwall img {
display: block;
filter:alpha(opacity=50); /*IE滤镜，透明度50%*/
-moz-opacity:0.5; /*Firefox私有，透明度50%*/
opacity:0.5;/*其他，透明度50%*/
}
.dot {
width: 100%;
height: 10px;
position: absolute;
bottom: 20px;
}
.warp {
width: 50%;
margin: 0 auto;
text-align: center
}
.warp a {
display: block;
float: left;
}
.warp span {
display: block;
height: 20px;
width: 20px;
border-radius: 100px;
margin: 0 auto;
background: white;
border: 4px solid #DDD;
filter:alpha(opacity=70); /*IE滤镜*/
-moz-opacity:0.7; /*Firefox私有*/
opacity:0.7 /*其他*/
}
.warp .active {
background: red;
}
</style>
</head>
<body>
<div class="imgwall">
<ul class="imgul">
<li><a href="javascript:void(0)"><img src="....jpg" /></a></li>
<li><a href="javascript:void(0)"><img src="....jpg" /></a></li>
<li><a href="javascript:void(0)"><img src="....jpg" /></a></li>
<li><a href="javascript:void(0)"><img src="....jpg" /></a></li>
</ul>
<div class="dot">
<div class="warp"> </div>
</div>
</div>
<div class="imgwall">
<ul class="imgul">
<li><a href="javascript:void(0)"><img src="....jpg" /></a></li>
<li><a href="javascript:void(0)"><img src="....jpg" /></a></li>
<li><a href="javascript:void(0)"><img src="....jpg" /></a></li>
</ul>
<div class="dot">
<div class="warp"> </div>
</div>
</div>
</body>
<script>
window.onload=function(){
//设置全局变量
var imgwall = getByClass(‘imgwall‘);
var warp = getByClass(‘warp‘);
config();
autoMove(4000);//每隔4秒钟自动滚一张
//初始化设置
function config(){
for(var i=0;i<imgwall.length;i++){
imgwall[i].ul = imgwall[i].getElementsByTagName(‘ul‘)[0];
imgwall[i].img = imgwall[i].getElementsByTagName(‘img‘)[0];
imgwall[i].imgs = imgwall[i].getElementsByTagName(‘img‘);
imgwall[i].target = -imgwall[i].img.offsetWidth;
//添加span标签
for(var j=0;j<imgwall[i].getElementsByTagName(‘img‘).length;j++)
{
var aWidth = 100/imgwall[i].getElementsByTagName(‘img‘).length + "%";
warp[i].innerHTML += ‘<a style = "width:‘+aWidth+‘"><span></span></a>‘;
}
//设置整体大小
imgwall[i].style.width = imgwall[i].img.offsetWidth+‘px‘;
imgwall[i].style.height = imgwall[i].img.offsetHeight+‘px‘;
imgwall[i].doter = imgwall[i].getElementsByTagName(‘span‘);
imgwall[i].ul.style.width = imgwall[i].doter.length*imgwall[i].img.offsetWidth+‘px‘;//设置ul的宽度
//设置标志点的样式和事件
for(var j=0;j<imgwall[i].doter.length;j++){
imgwall[i].doter[0].className=‘active‘;
startMove(imgwall[i].img,{‘opacity‘:100,‘padding-top‘:0},10);
imgwall[i].doter[j].allbrother = imgwall[i].doter;
imgwall[i].doter[j].pul=imgwall[i].ul;
imgwall[i].doter[j].pimg=imgwall[i].img;
imgwall[i].doter[j].index = [i,j];
imgwall[i].doter[j].onclick=function(){
for(var i=0;i<this.allbrother.length;i++){
this.allbrother[i].className = ‘‘;
startMove(imgwall[this.index[0]].imgs[i],{‘opacity‘:0,‘padding-top‘:this.pimg.offsetHeight},50);
}
this.className=‘active‘;
startMove(this.pul,{‘left‘:-this.index[1]*this.pimg.offsetWidth},10);
startMove(imgwall[this.index[0]].imgs[this.index[1]],{‘opacity‘:100,‘padding-top‘:0},10);
imgwall[this.index[0]].target = -imgwall[this.index[0]].img.offsetWidth*(this.index[1]);
}
}
}
}
//自动播放
function autoMove(time){
setInterval(function(){
for(var i=0;i<imgwall.length;i++){
//判断是否滚到最后一个图
console.log(imgwall[i].target);
if(Math.abs(imgwall[i].ul.offsetLeft) >= (imgwall[i].getElementsByTagName(‘img‘).length-1)*imgwall[i].img.offsetWidth)
{
imgwall[i].target = 0 ;//跳到第一张
imgwall[i].ul.style.left = imgwall[i].target;
}
startMove(imgwall[i].ul,{‘left‘:imgwall[i].target},10);
imgwall[i].target -= imgwall[i].img.offsetWidth;
for(var j=0;j<imgwall[i].doter.length;j++){
imgwall[i].doter[j].className = ‘‘;
imgwall[i].doter[Math.abs(imgwall[i].target)/imgwall[i].img.offsetWidth-1].className = ‘active‘;
startMove(imgwall[i].imgs[j],{‘opacity‘:0,‘padding-top‘:imgwall[i].img.offsetHeight},50);
startMove(imgwall[i].imgs[Math.abs(imgwall[i].target)/imgwall[i].img.offsetWidth-1],{‘opacity‘:100,‘padding-top‘:0},10);
}
}
},time);
}
//class选择器
function getByClass(classname){
var obj=document.getElementsByTagName(‘*‘);
var res=[];
for(var i=0;i<obj.length;i++){
if(obj[i].className == classname)
{
res.push(obj[i]);
}
}
return res;
}
//获取样式
function getStyleName(obj,attr)
{
if(obj.currentStyle)
{
return obj.currentStyle[attr];
}
else
{
return getComputedStyle(obj,null)[attr];
};
};
//运动框架
function startMove(obj,json,v,endFn)
{
clearInterval(obj.timer);
obj.timer=setInterval(function(){
var mStop=true;
for(var attr in json)
{
var crr=0;
if(attr==‘opacity‘)
{
crr=Math.round(parseFloat(getStyleName(obj,attr)*100));
}
else
{
crr=parseInt(getStyleName(obj,attr));
}
var speed=(json[attr]-crr)/v;
speed=speed>0?Math.ceil(speed):Math.floor(speed);
if(crr!=json[attr]){mStop=false};
if(attr==‘opacity‘)
{
obj.style[attr]=(crr+speed)/100;
obj.style.filter=‘alpha(opacity=‘+(crr+speed)+‘)‘;
}
else
{
obj.style[attr]=crr+speed+‘px‘;
}
}
if(mStop)
{
clearInterval(obj.timer);
if(endFn)endFn();
}
},30);
}
}
</script>
</html>
没有考虑性能优化问题，纯属想到哪编到哪里，连遍历函数都没有用。
使用方法：只需把class=‘imgwall’的div放到要放的位置，然后修改里面img标签和a标签就可以了，其他什么都不用做。
注意事项：同一个页面，可以同时多处使用。每张图片的大小要一致，图片数量随意~。
时间： 2024-10-12 14:55:42