I currently have an image slider that allows users to switch between images. There are two buttons - one adds a new item to the slider, while the other is supposed to remove the current image from the slider, but it doesn't seem to be working properly.
Any suggestions on how I can make sure that the "remove item" button accurately removes the current item from the slider?
var slideIndex = 1;
showSlides(slideIndex);
function plusSlides(n) {
showSlides(slideIndex += n);
}
...
};I have made some adjustments to your code in order to eliminate the active slide feature. However, please note that this modification may lead to errors when your list is depleted because the sliding method you are using is not suitable. It is important to keep track of the current slide by setting an index as data-attr and retrieving that index upon button click. In other words, create an index for each slide dynamically, which can be automatically incremented.
var slideIndex = 1;
showSlides(slideIndex);
function plusSlides(n) {
showSlides(slideIndex += n);
}
function currentSlide(n) {
showSlides(slideIndex = n);
}
function showSlides(n) {
var i;
var slides = document.getElementsByClassName("mySlides");
var dots = document.getElementsByClassName("dot");
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";
slides[slideIndex - 1].className += " active";
slides[slideIndex - 1].id=slideIndex;
dots[slideIndex - 1].className += " active";
}
$('#RemoveItem').click(function () {
$(".active").remove();
});
$('#NewsItem').click(function () {
var maindiv = $("<div class='mySlides fade'>")
.append($("<div class='numbertext'>4 / 4</div>"))
.append($("<img src='4.jpg' style='width:100%;height:650px' />"))
.append($("<div class='text'>Caption Four</div>"));
$('.slideshow-container').append(maindiv);
$('.footer').append($("<span class='dot' onclick='currentSlide(4)'></span>"));
});* {box-sizing:border-box}
body {font-family: Verdana,sans-serif;margin:0}
.mySlides {display:none}
/* 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;
}
/* Position the "next button" to the right */
.next {
right: 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);
}
.slideshow-container{
margin-top:20px;
}
/* Caption text */
.text {
color: #f2f2f2;
font-size: 15px;
padding: 8px 12px;
position: absolute;
bottom: 8px;
width: 100%;
text-align: center;
}
/* Number text (1/3 etc) */
.numbertext {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}
/* The dots/bullets/indicators */
.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;
}
/* 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}
} <script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<button id="NewsItem">Add Item</button>
<button id="RemoveItem">remove Item</button>
<div class="slideshow-container">
<div class="mySlides fade">
<div class="numbertext">1 / 3</div>
<img src="1.jpg" style="width:100%" />
<div class="text">Caption Text</div>
</div>
<div class="mySlides fade">
<div class="numbertext">2 / 3</div>
<img src="2.jpg" style="width:100%" />
<div class="text">Caption Two</div>
</div>
<div class="mySlides fade">
<div class="numbertext">3 / 3</div>
<img src="3.jpg" style="width:100%" />
<div class="text">Caption Three</div>
</div>
<a class="prev" onclick="plusSlides(-1)">❮</a>
<a class="next" onclick="plusSlides(1)">❯</a>
</div>
<br />
<div style="text-align:center" class="footer">
<span class="dot" onclick="currentSlide(1)"></span>
<span class="dot" onclick="currentSlide(2)"></span>
<span class="dot" onclick="currentSlide(3)"></span>
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