Modal image galleries - multiple images
I am currently trying to make an image gallery based on the code here: http://www.w3schools.com/howto/howto_css_modal_images.asp
This code works fine for a single image, however it doesn't work when you try and add more. I believe this has to do with the javascript using IDs, but when I try to use classes in place of IDs that code will not work.
Has anybody had any luck using this example from W3 Schools to create a working gallery?
Thanks! :)
Here's the HTML and javascript from the body of my code.
<div class="container" id="gallery">
<h1>Gallery</h1>
<!-- Trigger the Modal -->
<img id="thumbnail-01" class="myImg" src="images/thumbnail.jpg" alt="Trolltunga, Norway" width="300" height="200">
<!-- The Modal -->
<div id="myModal" class="modal">
<!-- The Close Button -->
<span class="close" onclick="document.getElementById('myModal').style.display='none'">×</span>
<!-- Modal Content (The Image) -->
<img class="modal-content" id="modal-image">
<!-- Modal Caption (Image Text) -->
<div id="caption"></div>
</div>
<!-- Trigger the Modal -->
<img id="thumbnail-02" class="myImg" src="images/thumbnail.jpg" alt="Trolltunga, Norway" width="300" height="200">
<!-- The Modal -->
<div id="myModal" class="modal">
<!-- The Close Button -->
<span class="close" onclick="document.getElementById('myModal').style.display='none'">×</span>
<!-- Modal Content (The Image) -->
<img class="modal-content" id="modal-image">
<!-- Modal Caption (Image Text) -->
<div id="caption"></div>
</div>
</div>
<script>
// Get the modal
var modal = document.getElementById('myModal');
// Get the image and insert it inside the modal - use its "alt" text as a caption
var img = document.getElementsByClassName('myImg');
var modalImg = document.getElementById("modal-image");
var captionText = document.getElementById("caption");
img.onclick = function(){
modal.style.display = "block";
modalImg.src = this.src;
captionText.innerHTML = this.alt;
}
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}
</script>
Solution 1:
Try this. It uses a little bit of jquery, but you don't have to change your html. except changing id="myImg" to class="myImg"
// Get the modal
var modal = document.getElementById('myModal');
// Get the image and insert it inside the modal - use its "alt" text as a caption
var img = $('.myImg');
var modalImg = $("#img01");
var captionText = document.getElementById("caption");
$('.myImg').click(function(){
modal.style.display = "block";
var newSrc = this.src;
modalImg.attr('src', newSrc);
captionText.innerHTML = this.alt;
});
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
} /* Style the Image Used to Trigger the Modal */
.myImg {
border-radius: 5px;
cursor: pointer;
transition: 0.3s;
}
.myImg:hover {opacity: 0.7;}
/* The Modal (background) */
.modal {
display: none; /* Hidden by default */
position: fixed; /* Stay in place */
z-index: 1; /* Sit on top */
padding-top: 100px; /* Location of the box */
left: 0;
top: 0;
width: 100%; /* Full width */
height: 100%; /* Full height */
overflow: auto; /* Enable scroll if needed */
background-color: rgb(0,0,0); /* Fallback color */
background-color: rgba(0,0,0,0.9); /* Black w/ opacity */
}
/* Modal Content (Image) */
.modal-content {
margin: auto;
display: block;
width: 80%;
max-width: 700px;
}
/* Caption of Modal Image (Image Text) - Same Width as the Image */
#caption {
margin: auto;
display: block;
width: 80%;
max-width: 700px;
text-align: center;
color: #ccc;
padding: 10px 0;
height: 150px;
}
/* Add Animation - Zoom in the Modal */
.modal-content, #caption {
-webkit-animation-name: zoom;
-webkit-animation-duration: 0.6s;
animation-name: zoom;
animation-duration: 0.6s;
}
@-webkit-keyframes zoom {
from {-webkit-transform:scale(0)}
to {-webkit-transform:scale(1)}
}
@keyframes zoom {
from {transform:scale(0)}
to {transform:scale(1)}
}
/* The Close Button */
.close {
position: absolute;
top: 15px;
right: 35px;
color: #f1f1f1;
font-size: 40px;
font-weight: bold;
transition: 0.3s;
}
.close:hover,
.close:focus {
color: #bbb;
text-decoration: none;
cursor: pointer;
}
/* 100% Image Width on Smaller Screens */
@media only screen and (max-width: 700px){
.modal-content {
width: 100%;
}
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!-- Trigger the Modal -->
<img class="myImg" src="http://www.chinabuddhismencyclopedia.com/en/images/thumb/b/b8/Nature.jpg/240px-Nature.jpg" alt="Trolltunga, Norway" width="300" height="200">
<img class="myImg" src="http://www.worldlandtrust.org/sites/default/files/rainforest-reserve-regua-brazil.jpg" alt="Trolltunga, Norway" width="300" height="200">
<!-- The Modal -->
<div id="myModal" class="modal">
<!-- The Close Button -->
<span class="close" onclick="document.getElementById('myModal').style.display='none'">×</span>
<!-- Modal Content (The Image) -->
<img class="modal-content" id="img01">
<!-- Modal Caption (Image Text) -->
<div id="caption"></div>
</div>Solution 2:
Use only one Image-Modal block,and use that modal block to different images,all the images must have the same className(in this example "myImg"),and add following javascript. I hope this is helpful.
var modal = document.getElementById("myModal");
var i;
var img = document.getElementsByClassName("myImg");
var modalImg = document.getElementById("img01");
for(i=0;i< img.length;i++)
{
img[i].onclick = function(){
modal.style.display = "block";
modalImg.src = this.src;
}
}
var span = document.getElementsByClassName("close")[0];
span.onclick = function() {
modal.style.display = "none";
}