function byId(id){
return typeof(id)==="string"?document.getElementById("id"):(id);
}
var index=0,
pics=byId("banner").getElementsByTagName("div"),
len=pics.length,
timer=null,
function slideImg(){
//鼠标离开，进行轮播
var main=byId("main");
main.onmouseout=function(){
timer=setInterval(function(){
index++;
if(index>=len){
index=0;
}
//图片切换
changeImg();
},3000)
}
main.onmouseout();
}
function changeImg(){
//鼠标离开时，给索引添加display属性
pics[index].style.display="block";
}js没写完但是function slideImg(){这一行一直报错，html在下方<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>9.20</title>
<link rel="stylesheet" href="css/1.css">
</head>
<body>
<div id="main">
<!-- 轮播图 -->
<div id="banner">
<a href="">
<div class="banner-slide slide1 slide-active"></div>
</a>
<a href="">
<div class="banner-slide slide2"></div>
</a>
<a href="">
<div class="banner-slide slide3"></div>
</a>
<a href="">
<div class="banner-slide slide4"></div>
</a>
</div>
</div>
<script src="js/1.js"></script>
</body>
</html>css在这里*{
padding: 0;
margin:0;
}
ul{
list-style: none;
}
body{
font-family: "微软雅黑";
font-size: 14px;
}
a{
text-decoration:none;
}
/*轮播图*/
.banner{
width: 1200px;
height: 460px;
position: absolute;
top:50%;
left:50%;
margin-top: -230px;
margin-left: -600px;
overflow: hidden;
}
.banner-slide{
width: 1200px;
height:460px;
display: none;
}
.slide1{
background-image: url("../img/1.jpg");
}
.slide2{
background-image: url("../img/3.jpg");
}
.slide3{
background-image: url("../img/4.jpg");
}
.slide4{
background-image: url("../img/5.jpg");
}
.slide-active{
display: block;
}求大神来看看吧
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