先上单纯轮播图代码
<!DOCTYPE html>
<html>
<head>
<title>1111</title>
<style type="text/css">
* {box-sizing:border-box}
body {font-family: Verdana,sans-serif;}
.mySlides {display:none}
/* 幻灯片容器 */
.slideshow-container {
max-width: 1000px;
position: relative;
margin: auto;
}
/* 标题文本 */
.text {
color: #f2f2f2;
font-size: 15px;
padding: 8px 12px;
position: absolute;
bottom: 8px;
width: 100%;
text-align: center;
}
/* 数字文本 (1/3 等) */
.numbertext {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}
/* 标记符号 */
.dot {
cursor:pointer;
height: 13px;
width: 13px;
margin: 0 2px;
background-color: #bbb;
border-radius: 50%;
display: inline-block;
transition: background-color 0.6s ease;
}
.active, .dot:hover {
background-color: #717171;
}
/* 淡出动画 */
.fade {
-webkit-animation-name: fade;
-webkit-animation-duration: 1.5s;
animation-name: fade;
animation-duration: 1.5s;
}
@-webkit-keyframes fade {
from {opacity: .4}
to {opacity: 1}
}
@keyframes fade {
from {opacity: .4}
to {opacity: 1}
}
</style>
</head>
<body>
<div class="slideshow-container">
<div class="mySlides fade">
<div class="numbertext">1 / 3</div>
<img src="https://c.runoob.com/wp-content/uploads/2017/01/img_mountains_wide.jpg" style="width:100%">
<div class="text">文本 1</div>
</div>
<div class="mySlides fade">
<div class="numbertext">2 / 3</div>
<img src="https://c.runoob.com/wp-content/uploads/2017/01/img_fjords_wide.jpg" style="width:100%">
<div class="text">文本 2</div>
</div>
<div class="mySlides fade">
<div class="numbertext">3 / 3</div>
<img src="https://c.runoob.com/wp-content/uploads/2017/01/img_nature_wide.jpg" style="width:100%">
<div class="text">文本 3</div>
</div>
</div>
<br>
<div style="text-align:center">
<span class="dot"></span>
<span class="dot"></span>
<span class="dot"></span>
</div>
<script type="text/javascript">
var slideIndex = 0;
showSlides();
function showSlides() {
var i;
var slides = document.getElementsByClassName("mySlides");
var dots = document.getElementsByClassName("dot");
for (i = 0; i < slides.length; i++) {
slides[i].style.display = "none";
}
slideIndex++;
if (slideIndex > slides.length) {slideIndex = 1}
for (i = 0; i < dots.length; i++) {
dots[i].className = dots[i].className.replace(" active", "");
}
slides[slideIndex-1].style.display = "block";
dots[slideIndex-1].className += " active";
setTimeout(showSlides, 2000); // 切换时间为 2 秒
}
</script>
</body>
</html>
二、带左右箭头，并且能点轮动小点的。
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>轮播图</title>
<style>
* {
margin:0;
padding:0;
}
a{
text-decoration: none;
}
.container {
position: relative;
width: 600px;
height: 400px;
margin:100px auto 0 auto;
box-shadow: 0 0 5px green;
overflow: hidden;
/*overflow是拿来隐藏图片的*/
}
.container .wrap {
position: absolute;
width: 4200px;
height: 400px;
z-index: 1;
}
.container .wrap img {
float: left;
width: 600px;
height: 400px;
}
.container .buttons {
position: absolute;
right: 5px;
bottom:40px;
width: 150px;
height: 10px;
z-index: 2;
}
.container .buttons span {
margin-left: 5px;
display: inline-block;
width: 20px;
height: 20px;
border-radius: 50%;
background-color: green;
text-align: center;
color:white;
cursor: pointer;
}
.container .buttons span.on{
background-color: red;
}
.container .arrow {
position: absolute;
top: 35%;
color: green;
padding:0px 14px;
border-radius: 50%;
font-size: 50px;
z-index: 2;
display: none;
}
.container .arrow_left {
left: 10px;
}
.container .arrow_right {
right: 10px;
}
.container:hover .arrow {
display: block;
}
.container .arrow:hover {
background-color: rgba(0,0,0,0.2);
}
</style>
</head>
<body>
<div class="container">
<div class="wrap" style="left: -600px;">
<img src="./img/bed.png" alt="">
<img src="./img/box.png" alt="">
<img src="./img/desk.png" alt="">
<img src="./img/bed.png" alt="">
<img src="./img/box.png" alt="">
<img src="./img/desk.png" alt="">
<img src="./img/bed.png" alt="">
</div>
<div class="buttons">
<span class="on">1</span>
<span>2</span>
<span>3</span>
<span>4</span>
<span>5</span>
</div>
<a href="javascript:;" class="arrow arrow_left"><</a>
<a href="javascript:;" class="arrow arrow_right">></a>
</div>
<script>
var wrap = document.querySelector(".wrap");
var next = document.querySelector(".arrow_right");
var prev = document.querySelector(".arrow_left");
next.onclick = function () {
next_pic();
}
prev.onclick = function () {
prev_pic();
}
function next_pic () {
index++;
if(index > 4){
index = 0;
}
showCurrentDot();
var newLeft;
if(wrap.style.left === "-3600px"){
newLeft = -1200;
}else{
newLeft = parseInt(wrap.style.left)-600;
}
wrap.style.left = newLeft + "px";
}
function prev_pic () {
index--;
if(index < 0){
index = 4;
}
showCurrentDot();
var newLeft;
if(wrap.style.left === "0px"){
newLeft = -2400;
}else{
newLeft = parseInt(wrap.style.left)+600;
}
wrap.style.left = newLeft + "px";
}
//自动播放
var timer = null;
function autoPlay () {
timer = setInterval(function () {
next_pic();
},2000);
}
autoPlay();
var container = document.querySelector(".container");
container.onmouseenter = function () {
clearInterval(timer);
}
container.onmouseleave = function () {
autoPlay();
}
//自动播放小圆点
var index = 0;
var dots = document.getElementsByTagName("span");
function showCurrentDot () {
for(var i = 0, len = dots.length; i < len; i++){
dots[i].className = "";
}
dots[index].className = "on";
}
//可选小圆点跳转
for (var i = 0, len = dots.length; i < len; i++){
(function(i){
dots[i].onclick = function () {
var dis = index - i;
if(index == 4 && parseInt(wrap.style.left)!==-3000){
dis = dis - 5;
}
//和使用prev和next相同，在最开始的照片5和最终的照片1在使用时会出现问题，导致符号和位数的出错，做相应地处理即可
if(index == 0 && parseInt(wrap.style.left)!== -600){
dis = 5 + dis;
}
wrap.style.left = (parseInt(wrap.style.left) + dis * 600)+"px";
index = i;
showCurrentDot();
}
})(i);
}
</script>
</body>
</html>
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