banner（根据li的z-index）
2019-04-01 本文已影响0人
王远清orz
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
*{ padding:0; margin:0; list-style:none;}
img{ display:block; border:0;}
.banner{ width:992px;height:420px; background:red; margin:100px auto;position:relative; overflow:hidden;}
.banner ul{ position:relative; z-index:1;}
.banner ul li{ position:absolute;}
.banner ol{ position:absolute; right:10px; bottom:10px; z-index:2;}
.banner ol li{ float:left; margin-left:8px; width:30px;height:20px; border:1px solid #fff; color:#000; line-height:20px ; text-align:center; cursor:pointer;}
.banner ol li.current{ background:#fcf;}
.btnright,.btnleft{ width:40px;height:70px; background:url(img/images/arr.png) no-repeat; position:absolute; top:50%; margin-top:-35px; left:0; cursor:pointer; z-index: 99; display:none;}
.btnright{ right:0px; left:auto; background:url(img/images/arr.png) no-repeat right top;}
</style>
<script type="text/javascript" src="js/jquery-1.7.2.min.js"></script>
<script type="text/javascript">
$(function(){
//默认第一个li显示
$('.banner ul li:first').css('z-index',1)
var num = 0;
var timer;
var len = $('.banner ul li').length;
var myzindex = 1;
// 角标的工作
$('.banner ol li').mouseenter(function(e) {
if(!$(this).hasClass('current')){
//角标的工作
$(this).addClass('current').siblings().removeClass('current')
//大图的工作
myzindex++;
$('.banner ul li').eq($(this).index()).css({'z-index':myzindex}).hide().fadeIn(500)
num = $(this).index();
}
});
// 自动播放
function autoplay(){
num++;
if(num> len-1){
num=0
}
myzindex++;
$('.banner ul li').eq(num).css({'z-index':myzindex}).hide().fadeIn(500)
$('.banner ol li').eq(num).addClass('current').siblings().removeClass('current')
}
timer = setInterval(autoplay,2000)
//鼠标移进移出
$('.banner').hover(function(){
$('span').show()
clearInterval(timer)
},function(){
$('span').hide()
timer = setInterval(autoplay,2000)
})
/*按钮*/
$('.btnright').click(function(e) {
autoplay()
});
$('.btnleft').click(function(e) {
num--;
if(num<0){
num= len-1
}
myzindex++;
$('.banner ul li').eq(num).css({'z-index':myzindex}).hide().fadeIn(500);
$('.banner ol li').eq(num).addClass('current').siblings().removeClass('current');
});
})
</script>
</head>
<body>
<div class="banner">
<ul>
<li><a href="#"><img src="img/images/1.jpg" width="992" height="420" /></a></li>
<li><a href="#"><img src="img/images/2.jpg" width="992" height="420" /></a></li>
<li><a href="#"><img src="img/images/3.jpg" width="992" height="420" /></a></li>
<li><a href="#"><img src="img/images/4.jpg" width="992" height="420" /></a></li>
<li><a href="#"><img src="img/images/5.jpg" width="992" height="420" /></a></li>
</ul>
<ol>
<li class="current">1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
</ol>
<span class="btnleft"></span>
<span class="btnright"></span>
</div>
</body>
</html>
