我正在尝试在我正在处理的朋友的页面上使用w3schools的多幻灯片 - 只有两个幻灯片显示它可以正常工作但是当你尝试添加更多时，事情就会停止工作。第三个幻灯片按钮控制第二个幻灯片放映＆amp;第四个没有出现在页面上。我还添加了另一个w3幻灯片中的小导航点：goo.gl/2bFJk2，但它们也不起作用。
我尝试改变代码，但我对JS的了解非常有限，所以我只是在黑暗中拍摄。我在var slideID中添加了更多“myslides”，向var slideIndex添加了更多（1），并添加了更多“showslides”，尝试使用前两个模式（＃，＃）但到目前为止没有运气。 / p>
如果有人能帮我解决这个问题，我真的很感激。感谢
以下是w3幻灯片'试试'页面的网址：https://www.w3schools.com/howto/tryit.asp?filename=tryhow_js_slideshow_multiple
以下是代码：
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
* {box-sizing: border-box}
body {font-family: Verdana, sans-serif; margin:0}
.mySlides1, .mySlides2, .mySlides3, .mySlides4, .mySlides5 {display: none}
img {vertical-align: middle;}
/* Slideshow container */
.slideshow-container {
max-width: 1000px;
position: relative;
margin: auto;
}
/* Next & previous buttons */
.prev, .next {
cursor: pointer;
position: absolute;
top: 50%;
width: auto;
padding: 16px;
margin-top: -22px;
color: white;
font-weight: bold;
font-size: 18px;
transition: 0.6s ease;
border-radius: 0 3px 3px 0;
user-select: none;
}
/* Position the "next button" to the right */
.next {
right: 0;
border-radius: 3px 0 0 3px;
}
/* On hover, add a grey background color */
.prev:hover, .next:hover {
background-color: #f1f1f1;
color: black;
}
/* Fading animation */
.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}
}
/* On smaller screens, decrease text size */
@media only screen and (max-width: 300px) {
.prev, .next,.text {font-size: 11px}
}
/* The dots/bullets/indicators */
.dot {
cursor: pointer;
height: 15px;
width: 15px;
margin: 0 2px;
background-color: #bbb;
border-radius: 50%;
display: inline-block;
transition: background-color 0.6s ease;
}
.active, .dot:hover {
background-color: #717171;
}
</style>
</head>
<body>
<div class="slideshow-container">
<div class="mySlides1 fade">
<img src="http://i63.tinypic.com/ajy0x1.jpg" style="width:100%">
</div>
<div class="mySlides1 fade">
<img src="http://i65.tinypic.com/2i71vv4.jpg" style="width:100%">
</div>
<div class="mySlides1 fade">
<img src="http://i63.tinypic.com/6p6mhi.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 0)">❮</a>
<a class="next" onclick="plusSlides(1, 0)">❯</a>
</div>
<div style="text-align:center">
<span class="dot" onclick="currentSlide(1)"></span>
<span class="dot" onclick="currentSlide(2)"></span>
<span class="dot" onclick="currentSlide(3)"></span>
</div>
<br>
<div class="slideshow-container">
<div class="mySlides2 fade">
<img src="http://i63.tinypic.com/ajy0x1.jpg" style="width:100%">
</div>
<div class="mySlides2 fade">
<img src="http://i65.tinypic.com/2i71vv4.jpg" style="width:100%">
</div>
<div class="mySlides2 fade">
<img src="http://i63.tinypic.com/6p6mhi.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 1)">❮</a>
<a class="next" onclick="plusSlides(1, 1)">❯</a>
</div>
<div style="text-align:center">
<span class="dot" onclick="currentSlide(1)"></span>
<span class="dot" onclick="currentSlide(2)"></span>
<span class="dot" onclick="currentSlide(3)"></span>
</div>
<br>
<div class="slideshow-container">
<div class="mySlides3 fade">
<img src="http://i63.tinypic.com/ajy0x1.jpg" style="width:100%">
</div>
<div class="mySlides3 fade">
<img src="http://i65.tinypic.com/2i71vv4.jpg" style="width:100%">
</div>
<div class="mySlides3 fade">
<img src="http://i63.tinypic.com/6p6mhi.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 1)">❮</a>
<a class="next" onclick="plusSlides(1, 1)">❯</a>
</div>
<div style="text-align:center">
<span class="dot" onclick="currentSlide(1)"></span>
<span class="dot" onclick="currentSlide(2)"></span>
<span class="dot" onclick="currentSlide(3)"></span>
</div>
<br>
<div class="slideshow-container">
<div class="mySlides4 fade">
<img src="http://i63.tinypic.com/ajy0x1.jpg" style="width:100%">
</div>
<div class="mySlides4 fade">
<img src="http://i65.tinypic.com/2i71vv4.jpg" style="width:100%">
</div>
<div class="mySlides4 fade">
<img src="http://i63.tinypic.com/6p6mhi.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 1)">❮</a>
<a class="next" onclick="plusSlides(1, 1)">❯</a>
</div>
<div style="text-align:center">
<span class="dot" onclick="currentSlide(1)"></span>
<span class="dot" onclick="currentSlide(2)"></span>
<span class="dot" onclick="currentSlide(3)"></span>
</div>
<br>
<div class="slideshow-container">
<div class="mySlides5 fade">
<img src="http://i63.tinypic.com/ajy0x1.jpg" style="width:100%">
</div>
<div class="mySlides5 fade">
<img src="http://i65.tinypic.com/2i71vv4.jpg" style="width:100%">
</div>
<div class="mySlides5 fade">
<img src="http://i63.tinypic.com/6p6mhi.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 1)">❮</a>
<a class="next" onclick="plusSlides(1, 1)">❯</a>
</div>
<div style="text-align:center">
<span class="dot" onclick="currentSlide(1)"></span>
<span class="dot" onclick="currentSlide(2)"></span>
<span class="dot" onclick="currentSlide(3)"></span>
</div>
<br>
<script>
var slideIndex = [1,1,1,1,1];
var slideId = ["mySlides1", "mySlides2", "mySlides3", "mySlides4", "mySlides5"]
showSlides(1, 0);
showSlides(1, 1);
showSlides(2, 1);
showSlides(3, 1);
showSlides(4, 2);
function plusSlides(n, no) {
showSlides(slideIndex[no] += n, no);
}
function showSlides(n, no) {
var i;
var x = document.getElementsByClassName(slideId[no]);
if (n > x.length) {slideIndex[no] = 1}
if (n < 1) {slideIndex[no] = x.length}
for (i = 0; i < x.length; i++) {
x[i].style.display = "none";
}
x[slideIndex[no]-1].style.display = "block";
}
</script>
</body>
</html>