Bootstrap 5 is in alpha when this is written and it’s subject to change.
Bootstrap is a popular UI library for any JavaScript apps.
In this article, we’ll look at how to add modals with JavaScript with Bootstrap 5.
Scrollable Modal
We can make a modal that lets us scroll the modal body by adding the .modal-dialog-scrollable class:
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#modal">
Launch modal
</button>
<div class="modal" tabindex="-1" id='modal' data-backdrop="static">
<div class="modal-dialog modal-dialog-scrollable">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title">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">
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam at neque orci. In vehicula metus eu euismod rhoncus. Pellentesque pharetra ligula sed efficitur ultricies. Quisque et congue metus, id rutrum purus. Maecenas finibus efficitur mauris, quis varius enim elementum a. Phasellus vel aliquet diam. Proin tincidunt eros pellentesque mauris laoreet, nec ullamcorper magna vulputate. Suspendisse potenti. Nullam lobortis ultricies nunc id vulputate. Curabitur pulvinar, lorem ac tempus lobortis, tortor tortor dignissim enim, quis tempor est lacus ut augue. Sed tincidunt lectus urna, ac aliquet velit suscipit a. Nullam tempus sem id nibh vulputate, nec ultricies lorem porttitor. Sed pharetra lacinia odio non sodales.
</p>
<p>
Mauris ullamcorper ornare dui at bibendum. Duis sed quam ac purus tincidunt aliquet. Suspendisse potenti. Praesent vitae turpis dui. Fusce ut tincidunt est, ut sagittis mi. Sed euismod pharetra pulvinar. Morbi at facilisis quam. Vestibulum sagittis arcu sit amet scelerisque vestibulum. Nulla nisl libero, ornare et facilisis et, tempus sagittis massa. Sed tincidunt metus non ex ornare, eu elementum lorem sagittis. Nam a sapien eleifend, dignissim purus sit amet, ultrices neque. Suspendisse imperdiet purus eu posuere pellentesque. Nulla facilisi.
</p>
</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>
Vertically Centered
We can use the modal-dialog-centered class to vertically center the modal:
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#modal">
Launch modal
</button>
<div class="modal" tabindex="-1" id='modal' data-backdrop="static">
<div class="modal-dialog modal-dialog-centered">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title">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">
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.
</p>
</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>
Using the Grid
We can put the grid inside the modal body.
This way, we can create layouts for our content.
For example, we can write:
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#modal">
Launch modal
</button>
<div class="modal" tabindex="-1" id='modal' data-backdrop="static">
<div class="modal-dialog modal-dialog-centered">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title">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 class="modal-body">
<div class="container-fluid">
<div class="row">
<div class="col-md-6">.col-md-6</div>
<div class="col-md-6 ml-auto">.col-md-6 .ml-auto</div>
</div>
<div class="row">
<div class="col-md-4 ml-auto">.col-md-4 .ml-auto</div>
<div class="col-md-2 ml-auto">.col-md-2 .ml-auto</div>
</div>
<div class="row">
<div class="col-md-6 ml-auto">.col-md-6 .ml-auto</div>
</div>
<div class="row">
<div class="col-sm-9">
Level 1: .col-sm-9
<div class="row">
<div class="col-8 col-sm-6">
Level 2: .col-8 .col-sm-6
</div>
<div class="col-4 col-sm-6">
Level 2: .col-4 .col-sm-6
</div>
</div>
</div>
</div>
</div>
</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>
We put our grid inside the div with the modal-body class.
The content will be size automatically.
Varying Modal Content
We can put a form in the modal body.
For example. we can write:
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#modal">
Launch modal
</button>
<div class="modal" tabindex="-1" id='modal' data-backdrop="static">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="modal-message">New post</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
<form>
<div class="mb-3">
<label for="recipient-name" class="col-form-label">Title:</label>
<input type="text" class="form-control" id="recipient-name">
</div>
<div class="mb-3">
<label for="message-text" class="col-form-label">content:</label>
<textarea class="form-control" id="message-text"></textarea>
</div>
</form>
</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</button>
</div>
</div>
</div>
</div>
We put a form inside the modal body.
Conclusion
We can add a modal with scrollable content.
Also, we can put a grid or forms inside the modal body.