4.1哪位大神做出来了可以发下代码吗搞了好久都没出来效果
帮帮忙
5 回答
function $(id){
return typeof id==='string'?document.getElementById(id):id;
}
window.onload=function(){
var timer=null;
var time2=null;
var index=0;
//获取鼠标滑过或点击的标签和要切换内容的元素
var lis=$('title').getElementsByTagName('li'),
divs=$('cont').getElementsByTagName('div');
if(lis.length!=divs.length)
return;
//遍历title下的所有li
for(i=0;i<lis.length;i++){
lis[i].id=i;
lis[i].onmouseover=function(){
clearInterval(time2);
//用that来引用当前的li
var that=this;
//如果存在定时器，就清除定时器
if(timer){
clearTimeout(timer);
timer=null;
}
timer=setTimeout(changeOption(that.id),500)
}
lis[i].onmouseout=function(){
clearInterval(time2);
if(timer){
clearTimeout(timer);
timer=null;
}
timer2=setInterval(autoPlay,2000);
}
}
//定时器，定时改变
if(timer2){
clearInterval(timer2);
timer2=null;
}
timer2=setInterval(autoPlay,2000);
//封装
function changeOption(x){
//清除所有li上的active
for(j=0;j<lis.length;j++){
lis[j].className='';
divs[j].style.display='none';
}
//设置当前高亮显示
lis[x].className='active';
divs[x].style.display='block';
index=x;
}
function autoPlay(){
index++;
if(index>=lis.length){
index=0;}
changeOption(index);
}
}<script type="text/javascript">
function $(id){
return typeof id==='string'?document.getElementById(id):id;
}
window.onload=banner;
function banner(){
var wrap=document.getElementById('wrap'),
picList=document.getElementById('pic').getElementsByTagName('li'),
list=document.getElementById('list').getElementsByTagName('li'),
index=0,
timer=null;
// 定义并调用自动播放函数
timer=setInterval(autoPlay,2000);
// 定义图片切换函数
function autoPlay(){
index++;
if(index>=list.length){
index=0;
}
autoChange(index);
}
for(var i=0;i<list.length;i++){
list[i].id=i;
list[i].onmouseover=function(){
clearInterval(timer);
autoChange(this.id);
}
list[i].onmouseout=function(){
timer=setInterval(autoPlay,2000);
}
picList[i].onmouseover=function(){
clearInterval(timer);
}
picList[i].onmouseout=function(){
timer=setInterval(autoPlay,2000);
}
}
function autoChange(curIndex){
for(var j=0;j<list.length;j++){
list[j].className='';
picList[j].style.display='none';
}
list[curIndex].className='on';
picList[curIndex].style.display='block';
index=curIndex;
}
}
</script>
image.html 代码
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<link rel="stylesheet" type="text/css" href="css/image.css">
<script type="text/javascript" src="js/image.js"></script>
</head>
<body>
<div id='wrap'>
<ul id="pic">
<li style="display: block;"><img src="http://img1.sycdn.imooc.com//54111cd9000174cd04900170.jpg" alt=""></li>
<li style="display: none;"><img src="http://img1.sycdn.imooc.com//54111dac000118af04900170.jpg" alt=""></li>
<li style="display: none;"><img src="http://img1.sycdn.imooc.com//54111d9c0001998204900170.jpg" alt=""></li>
<li style="display: none;"><img src="http://img1.sycdn.imooc.com//54111d8a0001f41704900170.jpg" alt=""></li>
<li style="display: none;"><img src="http://img1.sycdn.imooc.com//54111d7d00018ba604900170.jpg" alt=""></li>
</ul>
<ol id="list">
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
</ol>
</div>
</body>
</html>
css代码
*{margin:0;
padding:0;
list-style:none;}
.wrap{height:170px;
width:490px;
margin:60px auto;
overflow: hidden;
position: relative;
margin:100px auto;}
.wrap ul{position:absolute;}
.wrap ul li{height:170px;}
.wrap ol{position:absolute;
right:5px;
bottom:10px;}
.wrap ol li{height:20px; width: 20px;
background:#ccc;
border:solid 1px #666;
margin-left:5px;
color:#000;
float:left;
/*line-height:center;*/
text-align:center;
cursor:pointer;}
.wrap ol .on{background:#E97305;
color:#fff;}
js 代码
function $(id){
return typeof id==='string'?document.getElementById(id):id;
}
window.onload=image;
function image(){
var wrap=$('wrap');
var pic=$('pic');
var lis = pic.getElementsByTagName('li');
var list=$('list').getElementsByTagName('li');
var index=0;
var timer=null;
//轮播图自动播放
timer=setInterval(aotuPlay,2000)
// 鼠标划过整个容器时停止自动播放
pic.onmouseover=function(){
clearInterval(timer);
}
// 鼠标离开整个容器时继续播放至下一张
pic.onmouseout=function(){
timer=setInterval(aotuPlay,2000)
}
//定义并调用自动播放函数aotuPlay
function aotuPlay(){
index++;
if (index>=lis.length) {
index=0;
}
// 遍历所有数字导航实现划过切换至对应的图片
for (var i = 0; i < lis.length; i++) {
lis[i].style.display='none';
list[i].className='';
}
lis[index].style.display='block';
list[index].className='on';
}
}
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