Nikolajs Veidis Nikolajs Veidis - 4 months ago 93
Javascript Question

How to add multiple modal images using Bootstrap

I currently have 2 images that I want the user to be able to click on and have it popup, but so far only one image is working. I know that both images have the same id, but when I try changing the id's I have to create new CSS code, etc.



// 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.getElementById('myImg');
var modalImg = document.getElementById("img01");
var captionText = document.getElementById("caption");
img.onclick = function(){
modal.style.display = "block";
modalImg.src = this.src;
modalImg.alt = this.alt;
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: 50px;
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%;
}
}

<!-- Trigger the Modal -->
<img id="myImg" src="img/roof.jpg" alt=" Riga, Latvia" width="300" height="200">
<img id="myImg" src="img/personal.jpg" alt=" Riga, Latvia" width="300" height="200">
<!-- The Modal -->
<div id="myModal" class="modal">

<!-- The Close Button -->
<span class="close" onclick="document.getElementById('myModal').style.display='none'">&times;</span>

<!-- Modal Content (The Image) -->
<img class="modal-content" id="img01">

<!-- Modal Caption (Image Text) -->
<div id="caption"></div>
</div>




Answer

Set class for the elements

<img id="myImg" class="imageClass" src="img/roof.jpg" alt=" Riga, Latvia" width="300" height="200">
<img id="myImg" class="imageClass" src="img/personal.jpg" alt=" Riga, Latvia" width="300" height="200">

and use

document.getElementsByClassName("imageClass")

get collection of the img elements. Then apply the following on each element as below.

var images = document.getElementsByClassName("imageClass");
for(var i = 0; i < images.length; i++){
    var img = images[i];
    var modalImg = document.getElementById("img01");
    var captionText = document.getElementById("caption");
    img.onclick = function(){
        modal.style.display = "block";
        modalImg.src = this.src;
        modalImg.alt = this.alt;
        captionText.innerHTML = this.alt;
    }
}
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