Bootstrap 4 - Modal
Description
Modal is a child window that is layered over its parent window. It displays the content from a separate source that can have some interaction without leaving the parent window.
Basic Modal
Create a modal by using the .modal class and attribute data-toggle = "modal" on a element, like a button or link, along with a data-target = "#identifier" or href = "#identifier" to target a specific modal to toggle.
A static modal window example is shown in the following example −
Example
<html lang = "en">
<head>
<!-- Meta tags -->
<meta charset = "utf-8">
<meta name = "viewport" content = "width = device-width, initial-scale = 1, shrink-to-fit = no">
<!-- Bootstrap CSS -->
<link rel = "stylesheet"
href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
integrity = "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
crossorigin = "anonymous">
<title>Bootstrap 4 Example</title>
</head>
<body>
<div class =" container">
<h2>Basic Modal</h2>
<br>
<!-- Button trigger modal -->
<button type = "button" class = "btn btn-info" data-toggle = "modal" data-target = "#exampleModal">Launch 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 Header</h5>
<button type = "button" class = "close" data-dismiss = "modal" aria-label = "Close">
<span aria-hidden = "true">×</span>
</button>
</div>
<div class = "modal-body">
Modal Body
</div>
<div class = "modal-footer">
<button type = "button" class = "btn btn-danger" data-dismiss = "modal">Close</button>
<button type = "button" class = "btn btn-success">Save</button>
</div>
</div>
</div>
</div>
</div>
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src = "https://code.jquery.com/jquery-3.3.1.slim.min.js"
integrity = "sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
crossorigin = "anonymous">
</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/4.1.3/js/bootstrap.min.js"
integrity = "sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
crossorigin = "anonymous">
</script>
</body>
</html>
It will produce the following result −
Output
Vertically centered, Using the Grid, Tooltips and Popovers
You can make the modal vertically center by adding .modal-dialog-centered class to .modal-dialog element. Use the grid system within a modal by adding .container-fluid class within the .modal-body class. You can place the tooltips and popovers by adding data-toggle="popover" and data-toggle="tooltip" attributes.
The following example demonstrates the usage of above ways −
Example
<html lang = "en">
<head>
<!-- Meta tags -->
<meta charset = "utf-8">
<meta name = "viewport" content = "width = device-width, initial-scale = 1, shrink-to-fit = no">
<!-- Bootstrap CSS -->
<link rel = "stylesheet"
href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
integrity = "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
crossorigin = "anonymous">
<title>Bootstrap 4 Example</title>
</head>
<body>
<div class = "container">
<h2>Vertically centered, Using the Grid, Tooltips and Popovers</h2>
<br>
<button type = "button" class = "btn btn-info" data-toggle = "modal"
data-target = "#exampleModalGrid">Open Modal</button>
<!-- Modal -->
<div class = "modal fade" id = "exampleModalGrid" tabindex = "-1"
role = "dialog" aria-labelledby = "exampleModalLabel" aria-hidden = "true">
<div class = "modal-dialog modal-dialog-centered" role = "document">
<div class = "modal-content">
<div class = "modal-header">
<h5 class = "modal-title" id = "exampleModalLabel">Modal Header</h5>
<button type = "button" class = "close" data-dismiss = "modal"
aria-label = "Close">
<span aria-hidden = "true">×</span>
</button>
</div>
<div class = "modal-body">
<h5>Grid system in a modal</h5>
<div class = "row">
<div class = "col-md-4 bg-primary">class = 'col-md-4'</div>
<div class = "col-md-4 bg-success">class = 'col-md-4'</div>
<div class = "col-md-4 bg-primary">class = 'col-md-4'</div>
</div>
<br>
<div class = "row">
<div class = "col-8 col-sm-6 bg-primary">class = 'col-8 col-sm-6'
</div>
<div class = "col-4 col-sm-6 bg-success">class = 'col-4 col-sm-6'
</div>
</div>
<hr>
<h5>Popover in a modal</h5>
<a href = "#" data-toggle = "popover"
title = "Popover in a modal"
data-content = "Popover content inside modal">Click Me For Popover</a>
<hr>
<h5>Tooltip in a modal</h5>
<a href = "#" data-toggle = "tooltip" title = "Tutorialspoint!">Just Hover!</a>
</div>
<div class = "modal-footer">
<button type = "button" class = "btn btn-danger" data-dismiss = "modal">Close</button>
<button type = "button" class = "btn btn-success">Save</button>
</div>
</div>
</div>
</div>
</div>
<script>
$(document).ready(function(){
$('[data-toggle="popover"]').popover();
$('[data-toggle="tooltip"]').tooltip();
});
</script>
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src = "https://code.jquery.com/jquery-3.3.1.slim.min.js"
integrity = "sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
crossorigin = "anonymous">
</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/4.1.3/js/bootstrap.min.js"
integrity = "sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
crossorigin = "anonymous">
</script>
</body>
</html>
It will produce the following result −
Output
Modal Size
You can use the .modal-sm class for small modals and .modal-lg class for large modals as shown in the below example −
Example
<html lang = "en">
<head>
<!-- Meta tags -->
<meta charset = "utf-8">
<meta name = "viewport" content = "width = device-width, initial-scale = 1, shrink-to-fit = no">
<!-- Bootstrap CSS -->
<link rel = "stylesheet"
href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
integrity = "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
crossorigin = "anonymous">
<title>Bootstrap 4 Example</title>
</head>
<body>
<div class = "container">
<h2>Modal Size</h2>
<br>
<!-- Large modal -->
<button type = "button" class = "btn btn-info" data-toggle = "modal"
data-target = ".bd-example-modal-lg">Large modal</button>
<div class = "modal fade bd-example-modal-lg" tabindex = "-1"
role ="d ialog" aria-labelledby =" myLargeModalLabel"
aria-hidden = "true">
<div class = "modal-dialog modal-lg">
<div class = "modal-content">
<div class = "modal-header">
<h5 class = "modal-title" id = "exampleModalLabel">Modal Header</h5>
<button type = "button" class = "close" data-dismiss = "modal" aria-label = "Close">
<span aria-hidden = "true">×</span>
</button>
</div>
<div class = "modal-body">
Large Size Modal
</div>
<div class = "modal-footer">
<button type = "button" class = "btn btn-danger" data-dismiss = "modal">Close</button>
<button type = "button" class = "btn btn-success">Save</button>
</div>
</div>
</div>
</div>
<!-- Small modal -->
<button type = "button" class = "btn btn-info" data-toggle = "modal"
data-target = ".bd-example-modal-sm">Small modal</button>
<div class = "modal fade bd-example-modal-sm" tabindex = "-1"
role = "dialog" aria-labelledby = "mySmallModalLabel" aria-hidden = "true">
<div class = "modal-dialog modal-sm">
<div class = "modal-content">
<div class = "modal-header">
<h5 class = "modal-title" id = "exampleModalLabel">Modal Header</h5>
<button type = "button" class = "close" data-dismiss = "modal" aria-label = "Close">
<span aria-hidden = "true">×</span>
</button>
</div>
<div class = "modal-body">
Small Size Modal
</div>
<div class = "modal-footer">
<button type = "button" class = "btn btn-danger"
data-dismiss = "modal">Close</button>
<button type = "button" class = "btn btn-success">Save</button>
</div>
</div>
</div>
</div>
</div>
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src = "https://code.jquery.com/jquery-3.3.1.slim.min.js"
integrity = "sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
crossorigin = "anonymous">
</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/4.1.3/js/bootstrap.min.js"
integrity = "sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
crossorigin = "anonymous">
</script>
</body>
</html>
It will produce the following result −
Output
Varying Modal Content
You can have group of buttons to launch modals with different contents. Use the event.relatedTarget (returns the related target of an element) property and HTML data-* attributes to display the content depending on which button was clicked.
The following example demonstrates this −
Example
<html lang = "en">
<head>
<!-- Meta tags -->
<meta charset = "utf-8">
<meta name = "viewport" content = "width = device-width, initial-scale = 1, shrink-to-fit = no">
<!-- Bootstrap CSS -->
<link rel = "stylesheet"
href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
integrity = "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
crossorigin = "anonymous">
<title>Bootstrap 4 Example</title>
</head>
<body>
<div class = "container">
<h2>Varying Modal Content</h2>
<br>
<button type = "button" class = "btn btn-info" data-toggle = "modal"
data-target = "#exampleVaryingModal1" data-whatever = "John Doe">
Recipient: John Doe</button>
<button type = "button" class = "btn btn-info" data-toggle = "modal"
data-target = "#exampleVaryingModal1" data-whatever = "Will Smith">
Recipient: Will Smith</button>
<button type = "button" class = "btn btn-info" data-toggle = "modal"
data-target = "#exampleVaryingModal1" data-whatever = "Dwayne Johnson">
Recipient: Dwayne Johnson</button>
<div class = "modal fade" id = "exampleVaryingModal1" 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">New message</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 = "form-group">
<label for = "recipient-name" class = "col-form-label">
Recipient:</label>
<input type = "text" class = "form-control" id = "recipient-name">
</div>
<div class = "form-group">
<label for = "message-text" class = "col-form-label">Message:</label>
<textarea class = "form-control" id = "message-text"></textarea>
</div>
</form>
</div>
<div class = "modal-footer">
<button type = "button" class = "btn btn-danger"
data-dismiss = "modal">Close</button>
<button type = "button" class = "btn btn-success">Send</button>
</div>
</div>
</div>
</div>
</div>
<script>
$(document).ready(function(){
$('#exampleVaryingModal1').on('show.bs.modal', function (event) {
var button = $(event.relatedTarget) // Button that triggered the modal
var recipient = button.data('whatever') // Extract info from data-* attributes
// We are jquery here to update the modal's content
var modal = $(this)
modal.find('.modal-title').text('New message to ' + recipient)
modal.find('.modal-body input').val(recipient)
})
});
</script>
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src = "https://code.jquery.com/jquery-3.3.1.slim.min.js"
integrity = "sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
crossorigin = "anonymous">
</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/4.1.3/js/bootstrap.min.js"
integrity = "sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
crossorigin = "anonymous">
</script>
</body>
</html>
It will produce the following result −
Output
bootstrap4_components.htm
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