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Copy path轮播图.html
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轮播图.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>焦点轮播图</title>
<script src="../tools.js"></script>
<style>
* {
margin: 0px;
padding: 0px;
text-decoration: none;
}
.container {
width: 600px;
height: 400px;
border: 3px solid #333;
overflow: hidden;
position: relative;
margin: 50px auto;
}
.container .list {
width: 4200px;
height: 400px;
position: absolute;
/* left: -600px; */
z-index: 1;
}
.container .list img {
float: left;
width: 600px;
height: 400px;
}
.container .buttons {
position: absolute;
height: 10px;
width: 100px;
z-index: 2;
bottom: 20px;
left: 250px;
}
.container .buttons span {
cursor: pointer;
float: left;
border: 1px solid #fff;
width: 10px;
height: 10px;
border-radius: 50%;
background: #333;
margin-right: 5px;
}
.container .buttons .on {
background-color: orangered;
}
.container a {
cursor: pointer;
display: none;
line-height: 39px;
text-align: center;
font-size: 36px;
font-weight: bold;
width: 40px;
height: 40px;
position: absolute;
top: 180px;
z-index: 2;
background-color: rgba(0, 0, 0, 0.3);
color: #fff;
}
.container a:hover {
background-color: rgba(0, 0, 0, 0.7);
}
.container:hover a {
display: block;
}
.container .prev{
left: 20px;
}
.container .next {
right: 20px;
}
</style>
</head>
<body>
<div class="container">
<div class="list" style="left: -600px">
<img src="dog5.jpeg" alt="">
<img src="dog1.jpeg" alt="">
<img src="dog2.jpeg" alt="">
<img src="dog3.jpeg" alt="">
<img src="dog4.jpeg" alt="">
<img src="dog5.jpeg" alt="">
<img src="dog1.jpeg" alt="">
</div>
<div class="buttons">
<span index="1" class="on"></span>
<span index="2"></span>
<span index="3"></span>
<span index="4"></span>
<span index="5"></span>
</div>
<a href="#" class="prev"><</a>
<a href="#" class="next">></a>
</div>
<script>
var container = document.getElementsByClassName('container')[0];
var list = document.getElementsByClassName('list')[0];
var buttons = document.getElementsByTagName('span');
var prev = document.getElementsByClassName('prev')[0];
var next = document.getElementsByClassName('next')[0];
var index = 1; // 用于显示当前第几张图片
// var len = 5;
var animated = false;//判断图片是否正在切换中，图片没切换才让图片切换，在切换过程中等待其切换完毕再切换
// var interval = 3000;
var timer;
//用于亮起小圆点功能
function showButton() {
for (var i = 0; i < buttons.length; i++) {
if (buttons[i].className == 'on') {
buttons[i].className = '';
break;
}
}
buttons[index - 1].className = 'on';
}
//图片切换功能
function animate(offset) {
animated = true; //图片正在切换
var newLeft = parseInt(getStyle(list, 'left')) + offset;
var time = 300;//总位移时间
var interval = 15;//位移间隔时间
var speed = offset / (time / interval);//每次位移量
function go() {
if ((speed < 0 && parseInt(list.style.left) > newLeft)|| (speed > 0 && parseInt(list.style.left) < newLeft)) {
list.style.left = parseInt(list.style.left) + speed + 'px';
setTimeout(go, interval)
} else {
animated = false;
list.style.left = newLeft + 'px';
if (newLeft < -3000) {
list.style.left = '-600px';
}
if (newLeft > -600) {
list.style.left = '-3000px';
}
}
}
go();
}
//自动播放
function play() {
timer = setInterval(function() {
next.click();
}, 3000)
}
//鼠标移动到录播图上停止自动播放
function stop() {
clearInterval(timer);
}
addEvent(next, 'click', function() {
if (!animated) {
if (index == 5) {
index = 1;
} else {
index ++;
}
showButton();
animate(-600);
}
})
addEvent(prev, 'click', function() {
if (!animated) {
if (index == 1) {
index = 5;
} else {
index --;
}
showButton()
animate(600);
}
})
for (var i = 0; i < buttons.length; i++) {
addEvent(buttons[i], 'click', function() {
if (this.className == 'on') {
return;
}
var newIndex = parseInt(this.getAttribute('index'));
offset = -600 * (newIndex - index);
animate(offset);
index = newIndex;
showButton();
})
}
play();//一开始自动播放
addEvent(container, 'mouseover', stop);//鼠标移到轮播图上就停止自动播放
addEvent(container, 'mouseout', play);//鼠标移出去就自动播放
</script>
</body>
</html>