<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style media="screen">
*{
padding: 0;
margin: 0px;
}
#wrap{
width:533px;
height:300px;
position: relative;
overflow: hidden;
margin: 30px auto;
}
#wrap img{
width:533px;
height: 300px;
position: absolute;
top: 0px;
left: 0px;
}
#wrap img:nth-child(2), #wrap img:nth-child(3),#wrap img:nth-child(4){
opacity: 0;
}
.paginations{
position: absolute;
bottom: 7px;
width: 100%;
}
.paginations ul{
text-align: center;
}
.paginations ul li{
display: inline-block;
width: 14px;
height: 14px;
margin: 3px 7px;
}
.add{
background: url('images/蘑菇街.png') no-repeat -100px -20px;
}
#preButton{
background: url('images/蘑菇街.png') no-repeat 0 0;
width: 28px;
height: 45px;
position: absolute;
top: 50%;
margin-top: -23px;
left: 0px;
opacity: 0.7;
visibility: hidden;
}
.backg {
background: url('images/蘑菇街.png') no-repeat -160px -20px;
}
#nextButton{
background: url('images/蘑菇街.png') no-repeat -50px 0;
width: 28px;
height: 45px;
position: absolute;
top: 50%;
margin-top: -23px;
right: 0px;
opacity: 0.7;
visibility: hidden;
}
</style>
</head>
<body>
<div id="wrap">
<img src="images/1.jpg" alt="">
<img src="images/2.jpg" alt="">
<img src="images/3.jpg" alt="">
<img src="images/4.jpg" alt="">
<div class="paginations">
<ul>
<li class='backg'></li>
<li class='add'></li>
<li class='add'></li>
<li class='add'></li>
</ul>
</div>
<div id="preButton"></div>
<div id="nextButton"></div>
</div>
</body>
<script type="text/javascript">
var wrap=document.getElementById('wrap');
var paginations=document.querySelectorAll('.paginations ul li');
var preButton=document.getElementById('preButton');
var nextButton=document.getElementById('nextButton');
var pictures=document.querySelectorAll('#wrap img');
var change=233;
var timer;
//nowNum是当前显示的图片下标
var nowNum=1;
//holdNum是待显示的图片下标
var holdNum=0;
//oncliable控制点击事件是否可点，true可点，false不可点
var oncliable=true;
function animationProcess(){
var step=0;
var maxStep=40;
pictures[holdNum].style.left=change+'px';
if (timer) {
clearInterval(timer);
}
timer=setInterval(function(){
step++;
pictures[nowNum].style.opacity=1-1/maxStep*step;
pictures[nowNum].style.left=-change/maxStep*step+'px';
pictures[holdNum].style.opacity=1/maxStep*step;
pictures[holdNum].style.left=change-change/maxStep*step+'px';
if (step==maxStep) {
clearInterval(timer);
nowNum=holdNum;
//每次切图完毕，开启可点击事件
oncliable=true;
}
},16)
}
//分页符滚动函数
var timer1;
function paginationsRotate(holdNum) {
clearInterval(timer1);
var deg=1.8;
timer1=setInterval(function(){
deg+=1.8;
if (deg>=360) {
clearInterval(timer1);
}
paginations[holdNum].style.transform='rotateZ('+deg+'deg)';
},10)
}
paginationsRotate(0);
//分页符随着图的滚动换背景图片函数
function backgroundChange(holdNum){
for (var i = 0; i < paginations.length; i++) {
paginations[i].className='add';
console.log(i);
// paginations[i].style.background="url('images/蘑菇街.png') no-repeat -100px -20px";
}
paginations[holdNum].className='backg';
}
//图片切换
var timerOut=null;
function picturesLoop(){
if (timerOut) {
clearInterval(timerOut);
}
console.log('pp');
paginationsRotate(holdNum);
backgroundChange(holdNum);
animationProcess();
timerOut=setInterval(function(){
console.log('pp');
nowNum=holdNum;
holdNum++;
if (holdNum==pictures.length) {
holdNum=0;
}
paginationsRotate(holdNum);
backgroundChange(holdNum);
animationProcess();
},2000)
}
picturesLoop();
//给分页符设点击事件，使图片切换到对应的位置
for (var i = 0; i < paginations.length; i++) {
paginations[i].index=i
paginations[i].onmouseover=function(){
//如连续点击同一个分页符，跳出点击事件
if (holdNum==this.index) {
var oncliable2=false;
if (!oncliable2) {
return;
}
}
if (!oncliable) {
return;
}
oncliable=false;
clearInterval(timerOut);
clearInterval(timer);
holdNum=this.index;
paginationsRotate(holdNum);
backgroundChange(holdNum);
animationProcess();
}
}
//上分页
function pre(){
preButton.onclick=function (){
if (!oncliable) {
return;
}
oncliable=false;
nowNum=holdNum;
holdNum--;
if (holdNum<0) {
holdNum=pictures.length-1;
}
paginationsRotate(holdNum);
backgroundChange(holdNum);
animationProcess();
}
}
//下分页
function next(){
nextButton.onclick=function (){
if (!oncliable) {
return;
}
oncliable=false;
nowNum=holdNum;
holdNum++;
if (holdNum==pictures.length) {
holdNum=0;
}
paginationsRotate(holdNum);
backgroundChange(holdNum);
animationProcess();
}
}
//当鼠标放在图片上时，图片切换停止，上下分页图标显示，调用上下分页函数
wrap.onmouseover=function(){
clearInterval(timerOut);
preButton.style.visibility='visible';
nextButton.style.visibility='visible';
next();
pre();
}
//当鼠标离开图片是，图片切换重新开始，上下分页图标隐藏
wrap.onmouseleave=function(){
picturesLoop();
preButton.style.visibility='hidden';
nextButton.style.visibility='hidden';
}
</script>
</html>
浙公网安备 33010602011771号