<!DOCTYPE html>
<html >
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="jquery.js"></script>
<style>
*{
margin: 0px;
padding: 0px;
list-style: none;
}
#flash{
width: 400px;
height: 200px;
position: relative;
margin: 0 auto;
border:1px solid black;
overflow: hidden;
}
#falsh img{
width: 400px;
height: 200px;
position: absolute;
left: 0;
top: 0;
}
#flash ul{
position: absolute;
left: 25%;
bottom: 5%;
width: 200px;
height: 30px;
border-radius: 20px;
background-color: rgba(0,0,0,0.5);
}
#flash ul li{
float: left;
width: 15px;
height: 15px;
border-radius: 50%;
background-color: #fff;
margin-left: 20px;
margin-top: 7px;
}
#flash ul .li_first{
background-color: #f40;
}
#flash .button{
width: 50px;
height: 50px;
border-radius: 50%;
background-color: rgba(0,0,0,0.3);
cursor: pointer;
}
#flash .right{
position: absolute;
right: 10px;
top: 80px;
}
#flash .left{
position: absolute;
left: 10px;
top: 80px;
}
#flash .button span{
font-size: xx-large;
font-weight: 700;
line-height: 50px;
margin-left: 15px;
color: rgba(255,255,255,0.5);
}
</style>
</head>
<body>
<div id="flash">
<img src="img1.jpg" alt="">
<img src="img2.jpg" alt="">
<img src="img3.jpg" alt="">
<img src="img4.jpg" alt="">
<img src="img5.jpg" alt="">
<ul>
<li class="li_first"></li>
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
<div class="button right"><span>></span></div>
<div class="button left"><span><</span></div>
</div>
<script>
var count = 0 ; //定义全局变量count来表示当前图片
function run(){
count++;
count = count ==5?0:count;
$('#flash img').eq(count).fadeIn(300).siblings('img').fadeOut(300); //利用eq来遍历img，并将count位图片显示，其他兄弟元素隐藏，fadeIN位淡入显示，fadeOut为淡出
$('#flash ul li').eq(count).css('background','#f40').siblings('li').css('background','#fff'); //同样利用遍历改变圆点的背景色
}
function reverserun(){
count--;
count = count == -1?4:count;
$('#flash img').eq(count).fadeIn(300).siblings('img').fadeOut(300);
$('#flash ul li').eq(count).css('background','#f40').siblings('li').css('background','#fff');
}
var timer = setInterval(run,1000); //设置定时器
$('#flash').hover(function(){ //设置鼠标移入移出事件
clearInterval(timer);
},function(){
timer = setInterval(run,1000);
})
$('#flash ul li').mouseenter(function(){ //设置移入圆点事件
count = $(this).index();
count = count ==5?0:count;
$('#flash img').eq(count).fadeIn(300).siblings('img').fadeOut(300);
$('#flash ul li').eq(count).css('background','#f40').siblings('li').css('background','#fff');
})
$('#flash .right').click(function(){ //设置右键按钮点击事件
run();
})
$('#flash .left').click(function(){ //设置左键按钮点击事件
reverserun();
})
</script>
</body>
</html>
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