Javascript 如何添加另一个幻灯片?
我是新的网络编码,我不知道如何添加另一个幻灯片到w3school的例子。。。见下文。我将感谢任何帮助 我明白,我必须在我的html中添加另一个幻灯片类,但我不知道我需要在javaScript中更改什么,我尝试添加另一个索引,但没有成功 亲切的问候Javascript 如何添加另一个幻灯片?,javascript,html,css,Javascript,Html,Css,我是新的网络编码,我不知道如何添加另一个幻灯片到w3school的例子。。。见下文。我将感谢任何帮助 我明白,我必须在我的html中添加另一个幻灯片类,但我不知道我需要在javaScript中更改什么,我尝试添加另一个索引,但没有成功 亲切的问候 <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
* {box-sizing: border-box}
.mySlides1, .mySlides2 {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;
}
</style>
</head>
<body>
<h2 style="text-align:center">Multiple Slideshows</h2>
<p>Slideshow 1:</p>
<div class="slideshow-container">
<div class="mySlides1">
<img src="img_nature_wide.jpg" style="width:100%">
</div>
<div class="mySlides1">
<img src="img_snow_wide.jpg" style="width:100%">
</div>
<div class="mySlides1">
<img src="img_mountains_wide.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 0)">❮</a>
<a class="next" onclick="plusSlides(1, 0)">❯</a>
</div>
<p>Slideshow 2:</p>
<div class="slideshow-container">
<div class="mySlides2">
<img src="img_band_chicago.jpg" style="width:100%">
</div>
<div class="mySlides2">
<img src="img_band_la.jpg" style="width:100%">
</div>
<div class="mySlides2">
<img src="img_band_ny.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 1)">❮</a>
<a class="next" onclick="plusSlides(1, 1)">❯</a>
</div>
<script>
var slideIndex = [1,1];
var slideId = ["mySlides1", "mySlides2"]
showSlides(1, 0);
showSlides(1, 1);
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>
*{框大小:边框框}
.mySlides1、.mySlides2{display:none}
img{垂直对齐:中间;}
/*幻灯片容器*/
.slideshow容器{
最大宽度:1000px;
位置:相对位置;
保证金:自动;
}
/*下一步和上一步按钮*/
.prev,.next{
光标:指针;
位置:绝对位置;
最高:50%;
宽度:自动;
填充:16px;
利润上限:-22px;
颜色:白色;
字体大小:粗体;
字号:18px;
过渡:0.6s缓解;
边界半径:0 3px 3px 0;
用户选择:无;
}
/*将“下一步按钮”置于右侧*/
.下一个{
右:0;
边界半径:3px 0 3px;
}
/*悬停时,添加灰色背景色*/
.prev:悬停,.next:悬停{
背景色:#f1f1;
颜色:黑色;
}
多幻灯片
幻灯片1:
❮
❯
幻灯片2:
❮
❯
var slideIndex=[1,1];
var slideId=[“mySlides1”、“mySlides2”]
放映幻灯片(1,0);
放映幻灯片(1,1);
函数加滑块(n,否){
放映幻灯片(幻灯片索引[no]+=n,no);
}
功能演示幻灯片(n,否){
var i;
var x=document.getElementsByClassName(slideId[no]);
如果(n>x.length){slideIndex[no]=1}
如果(n<1){slideIndex[no]=x.length}
对于(i=0;i
我像这样修改了代码以实现第三次幻灯片放映。不幸的是,我的幻灯片只显示了一张图片,点击下一张图片时什么也没发生……有人能帮我找到解决方案吗
<p>Slideshow 3:</p>
<div class="slideshow-container">
<div class="mySlides3">
<img src="img_band_chicago.jpg" style="width:100%">
</div>
<div class="mySlides3">
<img src="img_band_la.jpg" style="width:100%">
</div>
<div class="mySlides3">
<img src="img_band_ny.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-3, 2)">❮</a>
<a class="next" onclick="plusSlides(3, 2)">❯</a>
</div>
<script>
var slideIndex = [3,3];
var slideId = ["mySlides1", "mySlides2", "mySlides3"]
showSlides(1, 0);
showSlides(1, 1);
showSlides(3, 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>
幻灯片放映3:
❮
❯
var slideIndex=[3,3];
var slided=[“mySlides1”、“mySlides2”、“mySlides3”]
放映幻灯片(1,0);
放映幻灯片(1,1);
放映幻灯片(3、2);
函数加滑块(n,否){
放映幻灯片(幻灯片索引[no]+=n,no);
}
功能演示幻灯片(n,否){
var i;
var x=document.getElementsByClassName(slideId[no]);
如果(n>x.length){slideIndex[no]=1}
如果(n<1){slideIndex[no]=x.length}
对于(i=0;i
添加html:
<p>Slideshow 3:</p>
<div class="slideshow-container">
<div class="mySlides3">
<img src="img_band_chicago.jpg" style="width:100%">
</div>
<div class="mySlides3">
<img src="img_band_la.jpg" style="width:100%">
</div>
<div class="mySlides3">
<img src="img_band_ny.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 2)">❮</a>
<a class="next" onclick="plusSlides(1, 2)">❯</a>
</div>
添加以下内容:
showSlides(1, 2);
如果更改为:
if (n < 2) {slideIndex[no] = x.length}
if(n<2){slideIndex[no]=x.length}
最终结果应该是:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
* {box-sizing: border-box}
.mySlides1, .mySlides2 {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;
}
</style>
</head>
<body>
<h2 style="text-align:center">Multiple Slideshows</h2>
<p>Slideshow 1:</p>
<div class="slideshow-container">
<div class="mySlides1">
<img src="img_nature_wide.jpg" style="width:100%">
</div>
<div class="mySlides1">
<img src="img_snow_wide.jpg" style="width:100%">
</div>
<div class="mySlides1">
<img src="img_mountains_wide.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 0)">❮</a>
<a class="next" onclick="plusSlides(1, 0)">❯</a>
</div>
<p>Slideshow 2:</p>
<div class="slideshow-container">
<div class="mySlides2">
<img src="img_band_chicago.jpg" style="width:100%">
</div>
<div class="mySlides2">
<img src="img_band_la.jpg" style="width:100%">
</div>
<div class="mySlides2">
<img src="img_band_ny.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 1)">❮</a>
<a class="next" onclick="plusSlides(1, 1)">❯</a>
</div>
<p>Slideshow 3:</p>
<div class="slideshow-container">
<div class="mySlides3">
<img src="img_band_chicago.jpg" style="width:100%">
</div>
<div class="mySlides3">
<img src="img_band_la.jpg" style="width:100%">
</div>
<div class="mySlides3">
<img src="img_band_ny.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 2)">❮</a>
<a class="next" onclick="plusSlides(1, 2)">❯</a>
</div>
<script>
var slideIndex = [1,1];
var slideId = ["mySlides1", "mySlides2", "mySlides3"]
showSlides(1, 0);
showSlides(1, 1);
showSlides(1, 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 < 2) {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>
*{框大小:边框框}
.mySlides1、.mySlides2{display:none}
img{垂直对齐:中间;}
/*幻灯片容器*/
.slideshow容器{
最大宽度:1000px;
位置:相对位置;
保证金:自动;
}
/*下一步和上一步按钮*/
.prev,.next{
光标:指针;
位置:绝对位置;
最高:50%;
宽度:自动;
填充:16px;
利润上限:-22px;
颜色:白色;
字体大小:粗体;
字号:18px;
过渡:0.6s缓解;
边界半径:0 3px 3px 0;
用户选择:无;
}
/*将“下一步按钮”置于右侧*/
.下一个{
右:0;
边界半径:3px 0 3px;
}
/*悬停时,添加灰色背景色*/
.prev:悬停,.next:悬停{
背景色:#f1f1;
颜色:黑色;
}
多幻灯片
幻灯片1:
❮
❯
幻灯片2:
❮
❯
幻灯片3:
❮
❯
var slideIndex=[1,1];
var slided=[“mySlides1”、“mySlides2”、“mySlides3”]
放映幻灯片(1,0);
放映幻灯片(1,1);
放映幻灯片(1、2);
函数加滑块(n,否){
放映幻灯片(幻灯片索引[no]+=n,no);
}
功能演示幻灯片(n,否){
var i;
var x=document.getElementsByClassName(slideId[no]);
如果(n>x.length){slideIndex[no]=1}
如果(n<2){slideIndex[no]=x.length}
对于(i=0;i
下面的答案还没有回答我的问题,是否有人有想法可以帮助我,我需要在javascript中添加什么?
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
* {box-sizing: border-box}
.mySlides1, .mySlides2 {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;
}
</style>
</head>
<body>
<h2 style="text-align:center">Multiple Slideshows</h2>
<p>Slideshow 1:</p>
<div class="slideshow-container">
<div class="mySlides1">
<img src="img_nature_wide.jpg" style="width:100%">
</div>
<div class="mySlides1">
<img src="img_snow_wide.jpg" style="width:100%">
</div>
<div class="mySlides1">
<img src="img_mountains_wide.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 0)">❮</a>
<a class="next" onclick="plusSlides(1, 0)">❯</a>
</div>
<p>Slideshow 2:</p>
<div class="slideshow-container">
<div class="mySlides2">
<img src="img_band_chicago.jpg" style="width:100%">
</div>
<div class="mySlides2">
<img src="img_band_la.jpg" style="width:100%">
</div>
<div class="mySlides2">
<img src="img_band_ny.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 1)">❮</a>
<a class="next" onclick="plusSlides(1, 1)">❯</a>
</div>
<p>Slideshow 3:</p>
<div class="slideshow-container">
<div class="mySlides3">
<img src="img_band_chicago.jpg" style="width:100%">
</div>
<div class="mySlides3">
<img src="img_band_la.jpg" style="width:100%">
</div>
<div class="mySlides3">
<img src="img_band_ny.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1, 2)">❮</a>
<a class="next" onclick="plusSlides(1, 2)">❯</a>
</div>
<script>
var slideIndex = [1,1];
var slideId = ["mySlides1", "mySlides2", "mySlides3"]
showSlides(1, 0);
showSlides(1, 1);
showSlides(1, 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 < 2) {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>