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| <head>
<meta charset="UTF-8">
<title>轮播图</title>
<style>
*{
list-style:none;
}
#box{
width: 400px;
height: 300px;
margin: 0 auto;
border: 1px solid #000;
}
#container{
position:relative;
}
#imglist img{
width: 400px;
height: 300px;
}
#iconlist{
position: absolute;
right:110px;
bottom:10px;
}
#iconlist ul li{
width: 30px;
height: 30px;
border-radius: 50%;
float: left;
background: rgba(0,200,255,0.4);
line-height: 30px;
text-align: center;
margin-left: 10px;
cursor: pointer;
}
</style>
</head>
<body>
<h1>轮播图</h1>
<hr>
<div id="box">
<div id="container">
<div id="imglist">
<img src="./imgs/mm041.jpg" style="display:block">
<img src="./imgs/mm042.jpg" style="display:none">
<img src="./imgs/mm043.jpg" style="display:none">
<img src="./imgs/mm044.jpg" style="display:none">
<img src="./imgs/mm045.jpg" style="display:none">
</div>
<div id="iconlist">
<ul>
<li style="color:red;background: rgba(0,255,255,1);">1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
</ul>
</div>
</div>
<button onclick="previous()">previous</button>
<button onclick="next()">next</button>
</div>
<script>
var imgs = imglist.children;
var lis = document.getElementsByTagName('li');
console.log(lis);
var t = 0;
function run(){
t++;
if (t>=imgs.length) {
t=0;
}
showPic(t);
showBtn(t);
console.log(t);
}
var cl1 = setInterval(run,1000);
function showPic(t){
for (var i = 0; i < imgs.length; i++) {
imgs[i].style.display="none";
}
imgs[t].style.display="block";
}
function showBtn(t){
for (var i = 0; i < lis.length; i++) {
lis[i].setAttribute('style','');
}
lis[t].setAttribute('style',"color:red;background: rgba(0,255,255,1);");
}
// 鼠标划入时,解除定时器
container.onmouseover = function(){
clearInterval(cl1);
}
container.onmouseout = function(){
cl1 = setInterval('run()',1000);
}
// 鼠标滑过按钮时,切换为绑定页面
for (var i = 0; i < lis.length; i++) {
(function(i){
lis[i].onmouseover = function(){
t=i;
showPic(t);
showBtn(t);
}
})(i);
}
// 按钮控制下一张上一张
function previous(){
clearInterval(cl1);
console.log(t);
t--;
if (t<0) {
t=(imgs.length-1);
}
showPic(t);
showBtn(t);
cl1 = setInterval(run,1000);
}
function next(){
clearInterval(cl1);
t++;
if (t>(imgs.length-1)) {
t=0;
}
showPic(t);
showBtn(t);
cl1 = setInterval(run,1000);
}
</script>
</body>
|