我最近在我的网站上为我的 slider 实现了一个自动 slider 代码，但是，由于某种原因它不起作用。 CSS 样式表中的 slider 动画代码靠近底部。我想知道是否有人可以帮助我解决我的代码问题。
这是我的 slider 的图片，只是想让自行车的图像自动移动。
HTML:
<!DOCTYPE html>
<html lang="en">
<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>Croydon Cycles</title>
<link rel="stylesheet" href="shop-style.css">
<link rel="shortcut icon" type="image/png" href="images/favicon.png">
<link href="https://fonts.googleapis.com/css?family=Karla" rel="stylesheet">
<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<script src="https://code.jquery.com/jquery-3.3.1.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="parallax.min.js"></script>
</head>
<!DOCTYPE html>
<html lang="en">
<body>
<div class="wrapper">
<header>
<nav>
<div class="menu-icon">
<i class="fa fa-bars fa-2x"></i>
</div>
<div class="logo">
Croydon Cycles
</div>
<div class="menu">
<ul>
<li><a href="index.html">Home</a></li>
<li><a href="#">Location</a></li>
<li><a href="shop.html">Shop</a></li>
<li><a href="#">Contact</a></li>
</ul>
</div>
</nav>
</header>
<div class="slider">
<div class="slideshow-container">
<div class="myslides fade">
<div class="numbers">1 / 4</div>
<div class="slider-pic"><img class="Fit" src="images/slider-1.jpg"></div>
<div class="caption">Kona Lanai 27.5" 2018 Mountain bike</div>
</div>
<div class="myslides fade">
<div class="numbers">2 / 4</div>
<div class="slider-pic"><img class="Fit" src="images/slider-2.jpg"></div>
<div class="caption">Decathlon B'twin Rockrider 520S Full Suspension Mountain Bike</div>
</div>
<div class="myslides fade">
<div class="numbers">3 / 4</div>
<div class="slider-pic"><img class="Fit" src="images/slider-3.jpg"></div>
<div class="caption">Ribble Aero 883 Carbon Road Bike - Matte Black</div>
</div>
<div class="myslides fade">
<div class="numbers">4 / 4</div>
<div class="slider-pic"><img class="Fit" src="images/slider-4.jpg"></div>
<div class="caption">Lapierre Overvolt AM700i</div>
</div>
<a class="prev" onclick="plusSlides(-1)">❮</a>
<a class="next" onclick="plusSlides(1)">❯</a>
</div>
</div>
<br>
<div style="text-align:center">
<span class="dots" onclick="currentSlide(1)"></span>
<span class="dots" onclick="currentSlide(2)"></span>
<span class="dots" onclick="currentSlide(3)"></span>
<span class="dots" onclick="currentSlide(4)"></span>
</div>
<script type="text/javascript">
var slideIndex = 1;
showSlide(slideIndex);
function plusSlides(n){
showSlide(slideIndex += n);
}
function currentSlide(n) {
showSlide(slideIndex = n);
}
function showSlide(n){
var i;
var slides = document.getElementsByClassName("myslides");
var dots = document.getElementsByClassName("dots");
if (n > slides.length) { slideIndex = 1};
if (n < 1) { slideIndex = slides.length};
for (i=0;i<slides.length;i++) {
slides[i].style.display = "none";
};
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";
}
</script>
<div class="content">
</div>
</div>
<script type="text/javascript">
// Menu-toggle button
$(document).ready(function() {
$(".menu-icon").on("click", function() {
$("nav ul").toggleClass("showing");
});
});
// Scrolling Effect
$(window).on("scroll", function() {
if($(window).scrollTop()) {
$('nav').addClass('black');
}
else {
$('nav').removeClass('black');
}
})
</script>
</body>
</html>
CSS:
html, body {
margin: 0;
padding: 0;
width: 100%;
font-family: verdana,sans-serif;
margin: 0;
font-family: "Helvetica Neue",sans-serif;
font-weight: lighter;
}
header {
width: 100%;
height: 60px;
background: url(hero.jpg) no-repeat 50% 50%;
background-size: cover;
}
.content {
width: 94%;
margin: 4em auto;
font-size: 20px;
line-height: 30px;
text-align: justify;
}
.logo {
line-height: 60px;
position: fixed;
float: left;
margin: 16px 46px;
color: #fff;
font-weight: bold;
font-size: 20px;
letter-spacing: 2px;
}
nav {
position: fixed;
width: 100%;
line-height: 60px;
z-index:2;
}
nav ul {
line-height: 60px;
list-style: none;
background: rgba(0, 0, 0, 0);
overflow: hidden;
color: #fff;
padding: 0;
text-align: right;
margin: 0;
padding-right: 40px;
transition: 1s;
}
nav.black ul {
background: #000;
}
nav ul li {
display: inline-block;
padding: 16px 40px;;
}
nav ul li a {
text-decoration: none;
color: #fff;
font-size: 16px;
}
.menu-icon {
line-height: 60px;
width: 100%;
background: #000;
text-align: right;
box-sizing: border-box;
padding: 15px 24px;
cursor: pointer;
color: #fff;
display: none;
}
@media(max-width: 786px) {
.logo {
position: fixed;
top: 0;
margin-top: 16px;
}
nav ul {
max-height: 0px;
background: #000;
}
nav.black ul {
background: #000;
}
.showing {
max-height: 34em;
}
nav ul li {
box-sizing: border-box;
width: 100%;
padding: 24px;
text-align: center;
}
.menu-icon {
display: block;
}
}
body{
font-family: verdana,sans-serif;
margin: 0;
}
.slideshow-container{
width: 100%;
position: relative;
margin: auto;
}
.numbers{
position: absolute;
top: 0;
color: #f2f2f2;
padding: 8px 12px;
font-size: 12px;
}
.myslides{
display: none;
}
.prev , .next{
position: absolute;
top: 50%;
font-size: 18px;
font-weight: bold;
padding: 16px;
margin-top: -22px;
border-radius: 0 3px 3px 0;
color: black;
cursor: pointer;
}
.next{
right: 0;
border-radius: 3px 0 0 3px;
}
.prev:hover,.next:hover{
background-color: rgba(0,0,0,0.8);
}
.caption{
text-align: center;
position: absolute;
bottom: 8px;
width: 100%;
color: black;
font-size: 15px;
padding: 8px 22px;
left:-2%;
}
.dots{
width: 13px;
height: 13px;
background: gray;
display: inline-block;
border-radius: 50%;
cursor: pointer;
}
.fade{
animation-name:fade;
animation-duration:1.5s;
}
@keyframes fade{
from {opacity: 0.4;}
to {opacity: 1;}
}
.active, .dot:hover {
background-color: #333;
}
.slider-pic {
display: grid;
height: 100%;
z-index:0;
}
.Fit {
max-width: 100%;
max-height: 100vh;
margin: auto;
z-index:0;
}
@keyframes slider{
0%{
left: 0;
}
20%{
left: 0;
}
25%{
left: -100%;
}
45%{
left: -100%;
}
50%{
left: -200%;
}
70%{
left: -200%;
}
75%{
left: -300%;
}
95%{
left: -300%;
}
100%{
left: -400%;
}
}
#slider {
overflow: hidden;
}
#slider figure img {
width:20%;
float: left;
}
#slider figure {
position: relative;
width: 500%;
margin:0;
left:0;
animation: 20s slider infinite
}
最佳答案
在您的 JS 代码中添加此指令:
$(document).ready(function() {
$(".menu-icon").on("click", function() {
$("nav ul").toggleClass("showing");
});
// add this instruction !
setTimeout(function() {plusSlides(1) }, 1000)
})
这里每 1000 毫秒调用方法 slidePlus
关于javascript - 自动 slider 动画不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/51883515/