Hello! Newbie here. I'm OK with HTML and CSS, but seriously lack knowledge on JS. Wanting to learn, but I am under the gun to complete a new web site first and I'm stumped on some JS requirements. W3 Schools is a great source of info and learning for me, but I can't seem to find a complete and useful answer yet to this problem. I am making a Products page for my business where I want to show 4 - 6 pictures in a LightBox mode for each of four separate product lines, with all of the products lines shown on one page. Similar to how this company did it on their page: https://sonicenclosures.com/products/.
I've come to W3Schools and, to ensure that my first try would be successful, simply copied and pasted their LightBox code from the How To sections into my site. Everything worked fine for the first product line section. I even increased the number of images from four in the sample to six without any issues. Then I added another product line section a few DIVs down the page, and tried to recreate the Lightbox code using the original sample, and this is where everything fell apart. Now, when I click on any picture in my first product line row, the LightBox modal opens, and I can cycle through the images in that product line using the forward/reverse buttons, but when I reach the last image in that product line, it automatically jumps and cycles through the next six pictures of the following product line, which is not what I want it to do. If I try to click on any of the images in the second product line row, it opens the LightBox modal starting with the images from the first product line images, and then scrolls trough to the second line of images. I want each Lightbox to only show it's correlating product line images.
I'm sure that there must be some way to do this, as the referenced company's web site seems to work the way I'm looking for. Must be in my unique "IDs" or placement of my code snippets?? I have my CSS called from a separate CSS page, and I've got my JavaScript code at the end of the HTML for the LightBox sections.
Can anyone please show me the correct coding to allow me to have multiple separate LightBoxes on one page for individual product line imagery?
Hoping someone's out there with the correct info and kind enough to take pity on a poor wretched sole under a demanding deadline, like me!
Here's the code that I used - straight out of W3 Schools:
CSS:
body {
font-family: Verdana, sans-serif;
margin: 0;
}
* {
box-sizing: border-box;
}
.row > .column {
padding: 0 8px;
}
.row:after {
content: "";
display: table;
clear: both;
}
.column {
float: left;
width: 25%;
}
/* The Modal (background) */
.modal {
display: none;
position: fixed;
z-index: 1;
padding-top: 100px;
left: 0;
top: 0;
width: 100%;
height: 100%;
overflow: auto;
background-color: black;
}
/* Modal Content */
.modal-content {
position: relative;
background-color: #fefefe;
margin: auto;
padding: 0;
width: 90%;
max-width: 1200px;
}
/* The Close Button */
.close {
color: white;
position: absolute;
top: 10px;
right: 25px;
font-size: 35px;
font-weight: bold;
}
.close:hover,
.close:focus {
color: #999;
text-decoration: none;
cursor: pointer;
}
.mySlides {
display: none;
}
.cursor {
cursor: pointer;
}
/* Next & previous buttons */
.prev,
.next {
cursor: pointer;
position: absolute;
top: 50%;
width: auto;
padding: 16px;
margin-top: -50px;
color: white;
font-weight: bold;
font-size: 20px;
transition: 0.6s ease;
border-radius: 0 3px 3px 0;
user-select: none;
-webkit-user-select: none;
}
/* 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);
}
/* Number text (1/3 etc) */
.numbertext {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}
img {
margin-bottom: -4px;
}
.caption-container {
text-align: center;
background-color: black;
padding: 2px 16px;
color: white;
}
.demo {
opacity: 0.6;
}
.active,
.demo:hover {
opacity: 1;
}
img.hover-shadow {
transition: 0.3s;
}
.hover-shadow:hover {
box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
HTMIL:
<h2 style="text-align:center">Lightbox</h2>
<div class="row">
<div class="column">
<img src="img_nature.jpg" style="width:100%" onclick="openModal();currentSlide(1)" class="hover-shadow cursor">
</div>
<div class="column">
<img src="img_snow.jpg" style="width:100%" onclick="openModal();currentSlide(2)" class="hover-shadow cursor">
</div>
<div class="column">
<img src="img_mountains.jpg" style="width:100%" onclick="openModal();currentSlide(3)" class="hover-shadow cursor">
</div>
<div class="column">
<img src="img_lights.jpg" style="width:100%" onclick="openModal();currentSlide(4)" class="hover-shadow cursor">
</div>
</div>
<div id="myModal" class="modal">
<span class="close cursor" onclick="closeModal()">×</span>
<div class="modal-content">
<div class="mySlides">
<div class="numbertext">1 / 4</div>
<img src="img_nature_wide.jpg" style="width:100%">
</div>
<div class="mySlides">
<div class="numbertext">2 / 4</div>
<img src="img_snow_wide.jpg" style="width:100%">
</div>
<div class="mySlides">
<div class="numbertext">3 / 4</div>
<img src="img_mountains_wide.jpg" style="width:100%">
</div>
<div class="mySlides">
<div class="numbertext">4 / 4</div>
<img src="img_lights_wide.jpg" style="width:100%">
</div>
<a class="prev" onclick="plusSlides(-1)">❮</a>
<a class="next" onclick="plusSlides(1)">❯</a>
<div class="caption-container">
<p id="caption"></p>
</div>
<div class="column">
<img class="demo cursor" src="img_nature_wide.jpg" style="width:100%" onclick="currentSlide(1)" alt="Nature and sunrise">
</div>
<div class="column">
<img class="demo cursor" src="img_snow_wide.jpg" style="width:100%" onclick="currentSlide(2)" alt="Snow">
</div>
<div class="column">
<img class="demo cursor" src="img_mountains_wide.jpg" style="width:100%" onclick="currentSlide(3)" alt="Mountains and fjords">
</div>
<div class="column">
<img class="demo cursor" src="img_lights_wide.jpg" style="width:100%" onclick="currentSlide(4)" alt="Northern Lights">
</div>
</div>
</div>
JavaScript:
<script>
function openModal() {
document.getElementById("myModal").style.display = "block";
}
function closeModal() {
document.getElementById("myModal").style.display = "none";
}
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("demo");
var captionText = document.getElementById("caption");
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";
captionText.innerHTML = dots[slideIndex-1].alt;
}
</script>
