JavaScript:如何使用相同的脚本在一个页面上添加多个图像滑块?
我很难在一个页面上有多个滑块。我已经修复了一些随机问题,比如在stackoverflow上搜索时图像不显示或消失,但对于这个问题,我一直在寻找类似问题的答案,但我不太明白他们是如何修复的,因为只有固定代码被发布了 然而,据我所知,每个sliderdiv应该有一个不同的scripd,但我无法解决它 这是我的密码: HTML: 脚本: CSS:JavaScript:如何使用相同的脚本在一个页面上添加多个图像滑块?,javascript,html,Javascript,Html,我很难在一个页面上有多个滑块。我已经修复了一些随机问题,比如在stackoverflow上搜索时图像不显示或消失,但对于这个问题,我一直在寻找类似问题的答案,但我不太明白他们是如何修复的,因为只有固定代码被发布了 然而,据我所知,每个sliderdiv应该有一个不同的scripd,但我无法解决它 这是我的密码: HTML: 脚本: CSS: 首先,您需要向容器中添加id,并向函数中添加其他参数,以便它们知道哪些滑块需要更改: <div class="slideshow-container"
首先,您需要向容器中添加id,并向函数中添加其他参数,以便它们知道哪些滑块需要更改:
<div class="slideshow-container" id="first">
<!-- Full-width images with number and caption text -->
<div class="mySlides fade">
<img src="/images/1.jpg" style="width:100%">
</div>
<div class="mySlides fade">
<img src="/images/2.jpg" style="width:100%">
</div>
<div class="mySlides fade">
<img src="/images/3.jpg">
</div>
<!-- Next and previous buttons -->
<a class="prev" onclick="plusSlides(-1, 'first', 'firstSliderIndex')">❮</a>
<a class="next" onclick="plusSlides(1, 'first', 'firstSliderIndex')">❯</a>
<br />
<!-- The dots/circles -->
<div style="text-align:center">
<span class="dot" onclick="currentSlide(1, 'first', 'firstSliderIndex')"></span>
<span class="dot" onclick="currentSlide(2, 'first', 'firstSliderIndex')"></span>
<span class="dot" onclick="currentSlide(3, 'first', 'firstSliderIndex')"></span>
</div>
</div>
您的脚本:
<script>
var indexes = {
firstSliderIndex: 1,
secondSliderIndex: 2,
};
showSlides(indexes.firstSliderIndex, 'first', 'firstSliderIndex');
// Next/previous controls
function plusSlides(n, id, index) { // n - number of slide, id - container id, index - current slide number in slider
showSlides(indexes[index] += n, id, index);
}
// Thumbnail image controls
function currentSlide(n, id, index) {
showSlides(indexes[index] = n, id, index);
}
function showSlides(n, id, index) {
var i;
var slides = document.querySelectorAll(`#${id} .mySlides`);
var dots = document.querySelectorAll(`#${id} .dot`);
if (n > slides.length) {
indexes[index] = 1;
}
if (n < 1) {indexes[index] = 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[indexes[index]-1].style.display = "block";
dots[indexes[index]-1].className += " active";
}
</script>
当然,此代码可以重构或修改,但这是最简单的方法您需要向每个滑块添加ID或唯一类,并将其传递给函数showSlides,在那里您需要找到属于ID的幻灯片。函数showSlidesid,n{var slides=document.querySelectorAll${ID}.mySlides;var dots=document.querySelectorAll${id}.dot;..}很抱歉,这对我来说没有多大意义。我如何给他们ID,我应该在代码中的什么地方添加ID
* {box-sizing:border-box}
/* Slideshow container */
.slideshow-container {
max-width: 100%;
position: relative;
margin: auto;
}
/* Hide the images by default */
.mySlides {
display: none;
}
/* Next & previous buttons */
.prev, .next {
cursor: pointer;
position: absolute;
top: 50%;
width: auto;
margin-top: -22px;
padding: 16px;
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;
}
.prev {
left: 0;
border-radius: 3px 0 0 3px;
}
/* On hover, add a black background color with a little bit see-through */
.prev:hover, .next:hover {
background-color: rgba(0,0,0,0.8);
}
/* 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;
}
.fade {
-webkit-animation-name: fade;
-webkit-animation-duration: 1.5s;
-webkit-animation-fill-mode: forwards;
animation-name: fade;
animation-duration: 1.5s;
animation-fill-mode: forwards;
}
@-webkit-keyframes fade {
from {
opacity: .4
}
to {
opacity: 1
}
}
@keyframes fade {
from {
opacity: .4
}
to {
opacity: 1
}
}
</style>```
<div class="slideshow-container" id="first">
<!-- Full-width images with number and caption text -->
<div class="mySlides fade">
<img src="/images/1.jpg" style="width:100%">
</div>
<div class="mySlides fade">
<img src="/images/2.jpg" style="width:100%">
</div>
<div class="mySlides fade">
<img src="/images/3.jpg">
</div>
<!-- Next and previous buttons -->
<a class="prev" onclick="plusSlides(-1, 'first', 'firstSliderIndex')">❮</a>
<a class="next" onclick="plusSlides(1, 'first', 'firstSliderIndex')">❯</a>
<br />
<!-- The dots/circles -->
<div style="text-align:center">
<span class="dot" onclick="currentSlide(1, 'first', 'firstSliderIndex')"></span>
<span class="dot" onclick="currentSlide(2, 'first', 'firstSliderIndex')"></span>
<span class="dot" onclick="currentSlide(3, 'first', 'firstSliderIndex')"></span>
</div>
</div>
<script>
var indexes = {
firstSliderIndex: 1,
secondSliderIndex: 2,
};
showSlides(indexes.firstSliderIndex, 'first', 'firstSliderIndex');
// Next/previous controls
function plusSlides(n, id, index) { // n - number of slide, id - container id, index - current slide number in slider
showSlides(indexes[index] += n, id, index);
}
// Thumbnail image controls
function currentSlide(n, id, index) {
showSlides(indexes[index] = n, id, index);
}
function showSlides(n, id, index) {
var i;
var slides = document.querySelectorAll(`#${id} .mySlides`);
var dots = document.querySelectorAll(`#${id} .dot`);
if (n > slides.length) {
indexes[index] = 1;
}
if (n < 1) {indexes[index] = 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[indexes[index]-1].style.display = "block";
dots[indexes[index]-1].className += " active";
}
</script>