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Three buttons show the same content. HOW?

I have three buttons(when clicked, the modal shows) with different content inside them (every button has its own content and it's different from the other buttons) and now no matter on which button I click, it shows the same content from the last button I've added. Can anyone explain me how to fix this?
I need this to be done by Monday so quick help would be much appreciated.
<div class="popup1">
<style>
/* 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(0,0,0,0.4); /* Black w/ opacity */
}
/* Modal Content */
.modal-content {
position: relative;
background-color: #fefefe;
margin: auto;
padding: 0;
border: 1px solid #888;
width: 30%;
box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
-webkit-animation-name: animatetop;
-webkit-animation-duration: 0.4s;
animation-name: animatetop;
animation-duration: 0.4s
}
/* Add Animation */
#-webkit-keyframes animatetop {
from {top:-300px; opacity:0}
to {top:0; opacity:1}
}
#keyframes animatetop {
from {top:-300px; opacity:0}
to {top:0; opacity:1}
}
/* The Close Button */
.close {
color: white;
float: right;
font-size: 28px;
font-weight: bold;
}
.close:hover,
.close:focus {
color: #000;
text-decoration: none;
cursor: pointer;
}
.modal-header {
padding: 2px 16px;
background-color: #5ca6b8;
color: white;
}
.modal-body {padding: 2px 16px;}
.modal-footer {
padding: 2px 16px;
background-color: #5cb85c;
color: white;
}
</style>
<!-- Trigger/Open The Modal -->
<button id="myBtn">Sponsors</button>
<!-- The Modal -->
<div id="myModal" class="modal">
<!-- Modal content -->
<div class="modal-content">
<div class="modal-header">
<span class="close">×</span>
<h2>Our Sponsors</h2>
</div>
<div class="modal-body">
<ul>
<li>MONG</li>
<li>SCNG</li>
<li>Feel Slovenia</li>
</ul>
</div>
</div>
</div>
<script>
// Get the modal
var modal = document.getElementById("myModal");
// Get the button that opens the modal
var btn = document.getElementById("myBtn");
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];
// When the user clicks the button, open the modal
btn.onclick = function() {
modal.style.display = "block";
}
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}
// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
if (event.target == modal) {
modal.style.display = "none";
}
}
</script>
</div>
<div class="popup2">
<style>
/* The Modal (background) */
.modal2 {
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(0,0,0,0.4); /* Black w/ opacity */
}
/* Modal Content */
.modal-content2 {
position: relative;
background-color: #fefefe;
margin: auto;
padding: 0;
border: 1px solid #888;
width: 30%;
box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
-webkit-animation-name: animatetop;
-webkit-animation-duration: 0.4s;
animation-name: animatetop;
animation-duration: 0.4s
}
/* Add Animation */
#-webkit-keyframes animatetop {
from {top:-300px; opacity:0}
to {top:0; opacity:1}
}
#keyframes animatetop {
from {top:-300px; opacity:0}
to {top:0; opacity:1}
}
/* The Close Button */
.close2 {
color: white;
float: right;
font-size: 28px;
font-weight: bold;
}
.close2:hover,
.close2:focus {
color: #000;
text-decoration: none;
cursor: pointer;
}
.modal-header2 {
padding: 2px 16px;
background-color: #5ca6b8;
color: white;
}
.modal-body2 {padding: 2px 16px;}
.modal-footer2 {
padding: 2px 16px;
background-color: #5cb85c;
color: white;
}
</style>
<!-- Trigger/Open The Modal -->
<button id="myBtn2">My Gear</button>
<!-- The Modal -->
<div id="myModal2" class="modal2">
<!-- Modal content -->
<div class="modal-content2">
<div class="modal-header2">
<span class="close2">×</span>
<h2>My gear</h2>
</div>
<div class="modal-body2">
<ul>
<li>Nikon D3100</li>
<li>Sigma 10-20mm f/4</li>
<li>Nikkor 70-300mm f4-5.6</li>
<li>Nikkor 18-55mm f/3.5</li>
</ul>
</div>
</div>
</div>
<script>
// Get the modal
var modal = document.getElementById("myModal2");
// Get the button that opens the modal
var btn = document.getElementById("myBtn2");
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close2")[0];
// When the user clicks the button, open the modal
btn.onclick = function() {
modal.style.display = "block";
}
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}
// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
if (event.target == modal) {
modal.style.display = "none";
}
}
</script>
</div>
<div class="popup3">
<style>
/* The Modal (background) */
.modal3 {
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(0,0,0,0.4); /* Black w/ opacity */
}
/* Modal Content */
.modal-content3 {
position: relative;
background-color: #fefefe;
margin: auto;
padding: 0;
border: 1px solid #888;
width: 30%;
box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
-webkit-animation-name: animatetop;
-webkit-animation-duration: 0.4s;
animation-name: animatetop;
animation-duration: 0.4s
}
/* Add Animation */
#-webkit-keyframes animatetop {
from {top:-300px; opacity:0}
to {top:0; opacity:1}
}
#keyframes animatetop {
from {top:-300px; opacity:0}
to {top:0; opacity:1}
}
/* The Close Button */
.close3 {
color: white;
float: right;
font-size: 28px;
font-weight: bold;
}
.close3:hover,
.close3:focus {
color: #000;
text-decoration: none;
cursor: pointer;
}
.modal-header3 {
padding: 2px 16px;
background-color: #5ca6b8;
color: white;
}
.modal-body3 {padding: 2px 16px;}
.modal-footer3 {
padding: 2px 16px;
background-color: #5cb85c;
color: white;
}
</style>
<!-- Trigger/Open The Modal -->
<button id="myBtn3">My Hobbies</button>
<!-- The Modal -->
<div id="myModal3" class="modal3">
<!-- Modal content -->
<div class="modal-content3">
<div class="modal-header3">
<span class="close3">×</span>
<h2>My hobbies</h2>
</div>
<div class="modal-body3">
<ul>
<li>Photography</li>
<li>Videography</li>
<li>Traveling</li>
<li>Racing</li>
</ul>
</div>
</div>
</div>
<script>
// Get the modal
var modal = document.getElementById("myModal3");
// Get the button that opens the modal
var btn = document.getElementById("myBtn3");
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close3")[0];
// When the user clicks the button, open the modal
btn.onclick = function() {
modal.style.display = "block";
}
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}
// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
if (event.target == modal) {
modal.style.display = "none";
}
}
</script>
</div>

You are using the same variable modal for all three. So this:
var modal = document.getElementById("myModal");
gets overwritten by this
var modal = document.getElementById("myModal2");
which gets overwritten by this
var modal = document.getElementById("myModal3");
By the time the click callback happens, modal is only referring to the 3rd one, so that's the one you end up showing.
The fact that these are in different script tags does not isolate them. You're declaring these variables at the top level of their scripts (as opposed to in a function for example), and so they are global variables.

How do I have a popup window that closes on click?

Would it be possible for me to create a popup window using:
onclick="window.open(~~details~~)"
and somehow have that popup window close when it's clicked on?
This popup window is an image file.
Thank you.

First you have to create the popup and send a function to show it. In this example I use a button.
<div id="main">
<button id="popupopener" onclick="showpopup()"></button>
<div id="popup" onclick="popupclose()" style="display:none;">
<img src="./yourpath/yourimg.jpg"></img>
</div>
</div>
Now you do the JavaScript
<script>
function showpopup() {
document.getElementById("popup").style = "display:block;";
}
function popupclose() {
document.getElementById("popup").style = "display:none;";
}
</script>
This shows the PopUp if you click the button and hides itself if you click on it

Hope this would be helpful for you,
// 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 modalImg = document.getElementById("img01");
var captionText = document.getElementById("caption");
function openModal(){
modal.style.display = "block";
modalImg.src = document.getElementById('myImg').src;
captionText.innerHTML = document.getElementById('myImg').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";
}
#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 */
#caption {
margin: auto;
display: block;
width: 80%;
max-width: 700px;
text-align: center;
color: #ccc;
padding: 10px 0;
height: 150px;
}
/* Add Animation */
.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%;
}
}
<html>
<head>
</head>
<body>
<h2>Image Modal</h2>
<img id="myImg" src="http://via.placeholder.com/350x150" alt="Demo Image" width="300" height="200" onclick="openModal()">
<!-- The Modal -->
<div id="myModal" class="modal">
<span class="close">×</span>
<img class="modal-content" id="img01">
<div id="caption"></div>
</div>
</body>
</html>

How to display only the modal image and hide the main design

Below are the style and scripts of my modal pop up.The same style and scripts are used in all the pages but in one particular page it show the image in this way how to hide the blue coloured image and display only the pop up image.I need to hide the div wrapper on clicking the image.How can i do this
<!-- The Modal -->
<div id="myModal" class="modal" style="z-index:1001">
<span class="close">×</span>
<%-- <img class="modal-content" id="img01" src="images/MeetingQA.PNG">--%>
<img class="modal-content" id="img02" src="images/Meeting1.PNG" />
<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.getElementById('myImg');
//var modalImg = document.getElementById("img01");
var modalImg1 = document.getElementById("img02");
var captionText = document.getElementById("caption");
img.onclick = function () {
modal.style.display = "block";
$(".box").hide();
$(".categories").hide();
$(".content").hide();
//modalImg.src = "HelpDocs/MeetingQA.PNG";
modalImg1.src = "HelpDocs/AR/Reports/Collection%20Completed%20Work/Collectioncompleted_Agent.PNG";
}
// 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>
<style>
#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 */
#caption {
margin: auto;
display: block;
width: 80%;
max-width: 700px;
text-align: center;
color: #ccc;
padding: 10px 0;
height: 150px;
}
/* Add Animation */
.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%;
}
}
</style>

Modal window location

I have a modal window(popup) that does not fit on the screen height. It opens by pressing a button. The button may be in different part of webpage. Is there a solution to the modal window opened at the top of the screen(for example top: 100px) by pressing a button?
When I use position fixed, the only way to make scrollY on modal window, but it is not the way I want.

<!DOCTYPE html>
<html>
<head>
<style>
/* 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(0,0,0,0.4); /* Black w/ opacity */
}
/* Modal Content */
.modal-content {
position: relative;
background-color: #fefefe;
margin: auto;
padding: 0;
border: 1px solid #888;
width: 80%;
box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
-webkit-animation-name: animatetop;
-webkit-animation-duration: 0.4s;
animation-name: animatetop;
animation-duration: 0.4s
}
/* Add Animation */
#-webkit-keyframes animatetop {
from {top:-300px; opacity:0}
to {top:0; opacity:1}
}
#keyframes animatetop {
from {top:-300px; opacity:0}
to {top:0; opacity:1}
}
/* The Close Button */
.close {
color: white;
float: right;
font-size: 28px;
font-weight: bold;
}
.close:hover,
.close:focus {
color: #000;
text-decoration: none;
cursor: pointer;
}
.modal-header {
padding: 2px 16px;
background-color: #5cb85c;
color: white;
}
.modal-body {padding: 2px 16px;}
.modal-footer {
padding: 2px 16px;
background-color: #5cb85c;
color: white;
}
</style>
</head>
<body>
<h2>Animated Modal with Header and Footer</h2>
<!-- Trigger/Open The Modal -->
<button id="myBtn">Open Modal</button>
<!-- The Modal -->
<div id="myModal" class="modal">
<!-- Modal content -->
<div class="modal-content">
<div class="modal-header">
<span class="close">×</span>
<h2>Modal Header</h2>
</div>
<div class="modal-body">
<p>Some text in the Modal Body</p>
<p>Some other text...</p>
</div>
<div class="modal-footer">
<h3>Modal Footer</h3>
</div>
</div>
</div>
<script>
// Get the modal
var modal = document.getElementById('myModal');
// Get the button that opens the modal
var btn = document.getElementById("myBtn");
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];
// When the user clicks the button, open the modal
btn.onclick = function() {
modal.style.display = "block";
}
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}
// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
if (event.target == modal) {
modal.style.display = "none";
}
}
</script>
</body>
</html>
<change location of box>

Modal with embedded pdf

I am trying to put a modal on a website I am making that has an embedded PDF.
The pdf shows up really small. I did not write this code from scratch. I found it on another site. Can anyone help?
I'm using the Zurb Foundation framework, FYI.
https://jsfiddle.net/8ryeqfbc/
HTML----
<section class="modal">
<div class="wrap row small-up-1 medium-up-1">
<div class="special column"><h3>Modal</h3>
<!-- Trigger/Open The Modal -->
<button id="myBtn">View Full Menu</button>
<!-- The Modal -->
<div id="myModal" class="modal">
<!-- Modal content -->
<div class="modal-content">
<span class="close">x</span>
<iframe src="pdf.pdf"></iframe>
</div>
</div>
</div>
</div>
</section>
Javascript ---
<script>
// Get the modal
var modal = document.getElementById('myModal');
// Get the button that opens the modal
var btn = document.getElementById("myBtn");
// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];
// When the user clicks on the button, open the modal
btn.onclick = function() {
modal.style.display = "block";
}
// When the user clicks on <span> (x), close the modal
span.onclick = function() {
modal.style.display = "none";
}
// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
if (event.target == modal) {
modal.style.display = "none";
}
}
</script>
CSS-----
* 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: 500px; /* Full width */
height: 500px; /* Full height */
overflow: auto; /* Enable scroll if needed */
background-color: rgb(0,0,0); /* Fallback color */
background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
}
/* Modal Content */
.modal-content {
position: relative;
background-color: #fefefe;
margin: auto;
padding: 0;
border: 1px solid #888;
width: 95%;
box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
-webkit-animation-name: animatetop;
-webkit-animation-duration: 0.4s;
animation-name: animatetop;
animation-duration: 0.4s
}
/* Add Animation */
#-webkit-keyframes animatetop {
from {top:-300px; opacity:0}
to {top:0; opacity:1}
}
#keyframes animatetop {
from {top:-300px; opacity:0}
to {top:0; opacity:1}
}
/* The Close Button */
.close {
color: white;
float: right;
font-size: 28px;
font-weight: bold;
}
.close:hover,
.close:focus {
color: #000;
text-decoration: none;
cursor: pointer;
}
.modal-header {
padding: 2px 16px;
background-color: #5cb85c;
color: white;
}
.modal-body {padding: 2px 16px;}
.modal-footer {
padding: 2px 16px;
background-color: #5cb85c;
color: white;
}

Style the iframe to have it fill the modal box.
.modal-content iframe {
height: 100%;
width: 100%;
}