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passing data into Bootstrap modals

I have the below modal and call to the modal:
<button type="button" class="btn btn-outline-primary" data-val="xxx "data-bs-toggle="modal" data-bs-target="#exampleModal">Launch demo modal</button>
What I am trying to do, is take the data-val element in the button and pass it into the URL of the modal (replace bxw8pq with whatever data-val is equal to)
I have used this JS to just try and pass the data to the modal & it doesn't work (doesn't do anything at all!)
<script>
$('#exampleModal').on('show.bs.modal', function(e) {
var vidid = $(e.relatedTarget).data('val');
$(this).find(".modal-body").text(vidid);
});
</script>
Do you know how I can make this JS work & also how I can pass the value to the specific part of the string in the modal?
Thanks!!!!
Demo added by community:
$('#exampleModal').on('show.bs.modal', function(e) {
var vidid = $(e.relatedTarget).data('val');
$(this).find(".modal-body").text(vidid);
});
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha512-Dop/vW3iOtayerlYAqCgkVr2aTr2ErwwTYOvRFUpzl2VhCMJyjQF0Q9TjUXIo6JhuM/3i0vVEt2e/7QQmnHQqw==" crossorigin="anonymous" referrerpolicy="no-referrer" />
<button type="button" class="btn btn-outline-primary" data-val="Data value here!" data-toggle="modal" data-target="#exampleModal">Launch demo modal</button>
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabelDefault" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h5 class="modal-title" id="exampleModalLabelDefault">Modal title</h5>
</div>
<div class="modal-body">
<div style="width:100%;height:0px;position:relative;padding-bottom:56.250%;"><img src="https://via.placeholder.com/800"></div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha512-oBTprMeNEKCnqfuqKd6sbvFzmFQtlXS3e0C/RGFV0hD6QzhHV+ODfaQbAlmY6/q0ubbwlAM/nCJjkrgA3waLzg==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>

How to create a JS script to apply to multiple Bootstrap modals on one page

I am trying to set up a page with 14 different modals. I previously set them up so they would all open normally, and they've worked. But I found something to let me make them draggable when opened. So I am trying to figure out how to do that, and finally got it to work, but only with one modal. My other modals do not open unless I change the code to reflect the name of that modal instead. Then the first modal doesn't work. Please tell me how to make the JavaScript code generalized for all of my modals.
Here is my script's code:
<script type="text/javascript">
window.onload=function(){
$('#btn1').click(function() {
// reset modal if it isn't visible
if (!($('.modal.in').length)) {
$('.modal-dialog').css({
top: 110,
left: 500
});
}
$('#modal1').modal({
backdrop: true,
show: true
});
$('.modal-dialog').draggable({
handle: ".modal-header"
});
});
}
</script>
Here is my modals' code, with only two modals instead of all 14:
<button id="btn1" class="btn btn-info btn-lg" data-target="#modal1">Modal 1</button>
<div class="modal fade" id="modal1" role="dialog">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" >Modal 1</h4>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
</div>
<div class="container">
<button id="btn2" class="btn btn-info btn-lg" data-target="#modal2">Modal 2</button>
<div class="modal fade" id="modal2" role="dialog">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" >Modal 2</h4>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
</div>
If I add another script after the one I have with a new "#btn" and/or a new "#modal", the latter one only works.
If I add a comma after the first "btn" and or "modal", it makes the two modals overlap.
Can someone help please? What am I doing wrong?

If you would like to avoid setting all the modals in JavaScript (and assuming you don't want to add additional coding per each modal), could you just make them all toggle via HTML data attributes? Then you'd only need to initialize your draggable code.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="Description of the page less than 150 characters">
<title>Modals</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/css/bootstrap.min.css" integrity="sha384-Smlep5jCw/wG7hdkwQ/Z5nLIefveQRIY9nfy6xoR1uRYBtpZgI6339F5dgvm/e9B" crossorigin="anonymous">
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
<style>
</style>
</head>
<body>
<div class="modal fade" id="modal1" tabindex="-1" role="dialog" aria-labelledby="modal1Label" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="modal1Label">Modal title</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
Modal 1
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
<div class="modal fade" id="modal2" tabindex="-1" role="dialog" aria-labelledby="modal2Label" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="modal2Label">Modal title</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
Modal 2
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
<div class="container-fluid h-100">
<h1>Modals</h1>
<button type="button" id="btn1" class="btn btn-info btn-lg" data-toggle="modal" data-target="#modal1">Modal 1</button>
<button type="button" id="btn2" class="btn btn-info btn-lg" data-toggle="modal" data-target="#modal2">Modal 2</button>
</div>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/js/bootstrap.min.js" integrity="sha384-o+RDsa0aLu++PJvFqy8fFScvbHFLtbvScb8AjopnFD+iEQ7wo/CG0xlczd+2O/em" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/draggable/1.0.0-beta.8/draggable.js" integrity="sha256-IqgasFC+xodVUxVInsmbOaKvevIOjh9iqPUBPd2tyVs=" crossorigin="anonymous"></script>
<script>
$(document).ready(function(){
$('.modal-dialog').draggable({
handle: ".modal-header"
});
});
</script>
</body>
</html>

Bootstrap modal not showing up, screen just has black overlay

I'm trying to get a modal to show on my bootstrap site, and when I click the button to trigger it the screen turns dark, but nothing shows up.
<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal">
Launch demo modal
</button>
<!-- Modal -->
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
...
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
This is the javascript I'm using as well, in addition to JQuery, popper.js, bootstrap js
$('#myModal').on('shown.bs.modal', function() {
$('#myInput').trigger('focus')
})
I literally took this right off the bootstrap site and for some reason it's not working.
$('#myModal').on('shown.bs.modal', function() {
$('#myInput').trigger('focus')
})
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" rel="stylesheet" />
<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal">
Launch demo modal
</button>
<!-- Modal -->
<div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">Modal title</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
...
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.3/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"></script>

The code snippet for the modal is perfectly fine, Check the parent div for both trigger and the modal and raise their z-index, It very likely that the Z-Index of the parent element is interfering with the modal pop up. You can try this`
.parentElementOfModal{
z-index:10000;
}

Copy pasted code of modal from Bootstrap site not working

I've been searching for a while but found no answer to my problem. I'm trying to make a modal but it's not showing up. The code of my modal and the button that triggers the modal are just copy pasted from the official bootstrap site. I don't know what's wrong but if you'd like to know my imports, I've already imported the following (in order):
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
<script type="text/javascript" href="js/jquery-2.2.4.js"></script>
<script type="text/javascript" href="js/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css" href="css/style.css">
Please help me.
EDIT
Here's the code of the modal I copied and pasted
<!-- Button trigger modal -->
<button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
Launch demo modal
</button>
<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="myModalLabel">Modal title</h4>
</div>
<div class="modal-body">
...
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>

Add jQuery and Bootstrap links properly. Using the CDN provided latest versions of the above your example works fine.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/>
<!-- Button trigger modal -->
<button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
Launch demo modal
</button>
<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="myModalLabel">Modal title</h4>
</div>
<div class="modal-body">
...
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
EDIT
Check that in your style.css you do not override any basic Bootstrap modal class by setting it for example with display:none;

I had the same problem when adding a modal from the example while following a Udacity tutorial on basic html and css. I added these lines of code and it worked:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/>
I thought for sure that I had included the modal in my customized download of the bootstrap edition so I didn't think they would help, but as soon as I added these lines in the header, it worked as I intended. For a more precise example of how to add this to the header:
<head>
<!--these 3 added imports made the modal work-->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/>
<title>MyAwesomeWebpage</title>
</head>
PS Don't forget your other style sheets and javascript documents.

Twitter bootstrap modal not working

I am new to Twitter Bootstrap. I am working on a modal panel, but it is not being displayed. It fades the screen, but the modal itself does not appear. I have checked the error console, and there are no errors.
My code is inside the <head> tag; I include the scripts like:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript" src="<?php echo $ruadmin ?>js/bootstrap.js"></script>
<script src="<?php echo $ruadmin ?>js/tablesorter/jquery.tablesorter.js"></script>
<script src="<?php echo $ruadmin ?>js/tablesorter/tables.js"></script>
Modal page:
<a data-toggle="modal" href="#myModal" class="btn btn-primary btn-large">Launch demo modal</a>
<!-- Modal -->
<div id="myModal" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h3 id="myModalLabel">Welcome</h3>
</div>
<div class="modal-body">
<p> Hello </p>
</div>
<div class="modal-footer">
<button class="btn" data-dismiss="modal" aria-hidden="true">Close</button>
<button class="btn btn-primary">Save changes</button>
</div>
</div>

You need use the data-target tag.
Try to replace the href="#myModal" attribute with data-target="#myModal".
Besides, you have put a hide class, I guess it shouldn't be there.
Look at the examples here

Change this:
<a data-toggle="modal" href="#myModal" class="btn btn-primary btn-large">Launch demo modal</a>
To this:
<button type="button" class="btn btn-primary btn-large" data-toggle="modal" data-target="#myModal">Launch demo modal</button>
(remark that changing a tag to button tag is not the answer but it is adding the data-target and data-toggle attribute that does the "work")
Please look at this example:
<!DOCTYPE html >
<html>
<head>
<title>Bootstrap Modal</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>
<!-- Bootstrap -->
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.2/css/bootstrap.min.css">
<!-- Optional theme -->
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.2/css/bootstrap-theme.min.css">
<!-- Latest compiled and minified JavaScript -->
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.2/js/bootstrap.min.js"></script>
</head>
<body>
<button type="button" class="btn btn-primary btn-large" data-toggle="modal" data-target="#myModal">Launch demo modal</button>
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="purchaseLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="purchaseLabel">Purchase</h4>
</div>
<div class="modal-body">
sup?
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Purchase</button>
</div>
</div>
</div>
</div>
</body>
</html>

I had the same issue, I realized i include the JQUERY library after BOOTSTRAP.
Check to see that in your webpage you add/link first JQUERY and then Bootstrap

In case someone run into this problem and none of the above works, I didn't have the css class fade in the class attribute of my modal
I had the div of my modal like this
<div class="modal" id="AdvanceSearchModal" tabindex="-1" role="dialog">
I added fade class
<div class="modal fade" id="AdvanceSearchModal" tabindex="-1" role="dialog">
and with this the modal opens again

Bootstrap Modal doesn't like Id's that start with a number.
I had a UUID as my data-target and it did not work.
<button data-target="#7CB2ED35-3AE1-44FD-AEA8-D953E5C953D5">Launch Modal</button>
I solved it by pre-pend "M-" before all my UUID's so they're still unique:
<button data-target="#M-7CB2ED35-3AE1-44FD-AEA8-D953E5C953D5">Launch Modal</button>
✌🏻😊