Alerts
Bootstrap 5 Alerts component
Responsive Alerts built with the latest Bootstrap 5. Alerts provide contextual feedback messages for typical user actions with a handful of responsible and flexible alert boxes.
Provide contextual feedback messages for typical user actions with the handful of available and flexible alert messages.
Note: Read the API tab to find all available options and advanced customization
Basic examples
Click the buttons to launch the alerts.
A simple primary alert with
an example link. Give it a click if you like.
A simple secondary alert with
an example link. Give it a click if you like.
A simple success alert with
an example link. Give it a click if you like.
A simple danger alert with
an example link. Give it a click if you like.
A simple warning alert with
an example link. Give it a click if you like.
A simple info alert with
an example link. Give it a click if you like.
A simple light alert with
an example link. Give it a click if you like.
A simple dark alert with
an example link. Give it a click if you like.
<!-- Trigger buttons -->
<button type="button" id="primary" class="btn btn-primary m-1">Primary</button>
<button type="button" id="secondary" class="btn btn-secondary m-1">Secondary</button>
<button type="button" id="success" class="btn btn-success m-1">Success</button>
<button type="button" id="danger" class="btn btn-danger m-1">Danger</button>
<button type="button" id="warning" class="btn btn-warning m-1">Warning</button>
<button type="button" id="info" class="btn btn-info m-1">Info</button>
<button type="button" id="light" class="btn btn-light m-1">Light</button>
<button type="button" id="dark" class="btn btn-dark m-1">Dark</button>
<!-- Alerts -->
<div
class="alert fade"
id="alert-primary"
role="alert"
data-mdb-color="primary"
data-mdb-position="top-right"
data-mdb-stacking="true"
data-mdb-width="535px"
data-mdb-append-to-body="true"
data-mdb-hidden="true"
data-mdb-autohide="true"
data-mdb-delay="2000"
>
A simple primary alert with
<a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div
class="alert fade"
id="alert-secondary"
role="alert"
data-mdb-color="secondary"
data-mdb-position="top-right"
data-mdb-stacking="true"
data-mdb-width="535px"
data-mdb-append-to-body="true"
data-mdb-hidden="true"
data-mdb-autohide="true"
data-mdb-delay="2000"
>
A simple secondary alert with
<a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div
class="alert fade"
id="alert-success"
role="alert"
data-mdb-color="success"
data-mdb-position="top-right"
data-mdb-stacking="true"
data-mdb-width="535px"
data-mdb-width="535px"
data-mdb-append-to-body="true"
data-mdb-hidden="true"
data-mdb-autohide="true"
data-mdb-delay="2000"
>
A simple success alert with
<a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div
class="alert fade"
id="alert-danger"
role="alert"
data-mdb-color="danger"
data-mdb-position="top-right"
data-mdb-stacking="true"
data-mdb-width="535px"
data-mdb-width="535px"
data-mdb-append-to-body="true"
data-mdb-hidden="true"
data-mdb-autohide="true"
data-mdb-delay="2000"
>
A simple danger alert with
<a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div
class="alert fade"
id="alert-warning"
role="alert"
data-mdb-color="warning"
data-mdb-position="top-right"
data-mdb-stacking="true"
data-mdb-width="535px"
data-mdb-width="535px"
data-mdb-append-to-body="true"
data-mdb-hidden="true"
data-mdb-autohide="true"
data-mdb-delay="2000"
>
A simple warning alert with
<a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div
class="alert fade"
id="alert-info"
role="alert"
data-mdb-color="info"
data-mdb-position="top-right"
data-mdb-stacking="true"
data-mdb-width="535px"
data-mdb-width="535px"
data-mdb-append-to-body="true"
data-mdb-hidden="true"
data-mdb-autohide="true"
data-mdb-delay="2000"
>
A simple info alert with
<a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div
class="alert fade"
id="alert-light"
role="alert"
data-mdb-color="light"
data-mdb-position="top-right"
data-mdb-stacking="true"
data-mdb-width="535px"
data-mdb-width="535px"
data-mdb-append-to-body="true"
data-mdb-hidden="true"
data-mdb-autohide="true"
data-mdb-delay="2000"
>
A simple light alert with
<a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div
class="alert fade"
id="alert-dark"
role="alert"
data-mdb-color="dark"
data-mdb-position="top-right"
data-mdb-stacking="true"
data-mdb-width="535px"
data-mdb-width="535px"
data-mdb-append-to-body="true"
data-mdb-hidden="true"
data-mdb-autohide="true"
data-mdb-delay="2000"
>
A simple dark alert with
<a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
const triggers = [
'primary',
'secondary',
'success',
'danger',
'warning',
'info',
'light',
'dark',
];
const basicInstances = [
'alert-primary',
'alert-secondary',
'alert-success',
'alert-danger',
'alert-warning',
'alert-info',
'alert-light',
'alert-dark',
];
triggers.forEach((trigger, index) => {
let basicInstance = mdb.Alert.getInstance(document.getElementById(basicInstances[index]));
document.getElementById(trigger).addEventListener('click', () => {
basicInstance.show();
});
});
Static examples
Use .alert class, followed by one of the contextual classes alert-success, .alert-info,
.alert-warning, .alert-danger, .alert-primary, .alert-secondary, .alert-light or .alert-dark to create an alert.
A simple primary alert—check it out!
A simple secondary alert—check it out!
A simple success alert—check it out!
A simple danger alert—check it out!
A simple warning alert—check it out!
A simple info alert—check it out!
A simple light alert—check it out!
A simple dark alert—check it out!
<div class="alert" role="alert" data-mdb-color="primary">
A simple primary alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="secondary">
A simple secondary alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="success">
A simple success alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="danger">
A simple danger alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="warning">
A simple warning alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="info">
A simple info alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="light">
A simple light alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="dark">
A simple dark alert—check it out!
</div>
Link Color
Use .alert-link class to create matching colored links inside the alert box.
A simple primary alert with
an example link. Give it a click if you like.
A simple secondary alert with
an example link. Give it a click if you like.
A simple success alert with
an example link. Give it a click if you like.
A simple danger alert with
an example link. Give it a click if you like.
A simple warning alert with
an example link. Give it a click if you like.
A simple info alert with an example link. Give it a
click if you like.
A simple light alert with
an example link. Give it a click if you like.
A simple dark alert with an example link. Give it a
click if you like.
<div class="alert" role="alert" data-mdb-color="primary">
A simple primary alert with <a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div class="alert" role="alert" data-mdb-color="secondary">
A simple secondary alert with <a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div class="alert" role="alert" data-mdb-color="success">
A simple success alert with <a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div class="alert" role="alert" data-mdb-color="danger">
A simple danger alert with <a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div class="alert" role="alert" data-mdb-color="warning">
A simple warning alert with <a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div class="alert" role="alert" data-mdb-color="info">
A simple info alert with <a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div class="alert" role="alert" data-mdb-color="light">
A simple light alert with <a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
<div class="alert" role="alert" data-mdb-color="dark">
A simple dark alert with <a href="#" class="alert-link">an example link</a>. Give it a click if you like.
</div>
Icons
Use Font Awesome Icons to create alerts with icons. Depending on your icons and content, you may want to add more utilities or custom styles.
A simple primary alert—check it out!
A simple secondary alert—check it out!
A simple success alert—check it out!
A simple danger alert—check it out!
A simple warning alert—check it out!
A simple info alert—check it out!
A simple light alert—check it out!
A simple dark alert—check it out!
<div class="alert" role="alert" data-mdb-color="primary">
<i class="fas fa-info-circle me-3"></i>A simple primary alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="secondary">
<i class="fas fa-circle me-3"></i>A simple secondary alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="success">
<i class="fas fa-check-circle me-3"></i>A simple success alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="danger">
<i class="fas fa-times-circle me-3"></i>A simple danger alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="warning">
<i class="fas fa-exclamation-triangle me-3"></i>A simple warning alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="info">
<i class="fas fa-chevron-circle-right me-3"></i>A simple info alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="light">
<i class="fab fa-gratipay me-3"></i>A simple light alert—check it out!
</div>
<div class="alert" role="alert" data-mdb-color="dark">
<i class="fas fa-gem me-3"></i>A simple dark alert—check it out!
</div>
Additional Content
Alerts can contain additional elements like headings, paragraphs and dividers.
Well done!
Aww yeah, you successfully read this important alert message. This example text is going to run a bit longer so that you can see how spacing within an alert works with this kind of content.
Whenever you need to, be sure to use margin utilities to keep things nice and tidy.
<div class="alert" role="alert" data-mdb-color="success">
<h4 class="alert-heading">Well done!</h4>
<p>
Aww yeah, you successfully read this important alert message. This example text is
going to run a bit longer so that you can see how spacing within an alert works with
this kind of content.
</p>
<hr />
<p class="mb-0">
Whenever you need to, be sure to use margin utilities to keep things nice and tidy.
</p>
</div>
Dismissing
Using the alert JavaScript plugin, it’s possible to dismiss any alert inline. Here’s how:
- Be sure you’ve loaded the alert plugin, or the compiled Bootstrap JavaScript.
-
Add a close button and the
.alert-dismissibleclass, which adds extra padding to the right of the alert and positions the close button. -
On the close button, add the
data-mdb-dismiss="alert"attribute, which triggers the JavaScript functionality. Be sure to use thebuttonelement with it for proper behavior across all devices. -
To animate alerts when dismissing them, be sure to add the
.fadeand.show classes.
You can see this in action with a live demo:
Holy guacamole! You should check in on some of those fields below.
<div class="alert alert-dismissible fade show" role="alert" data-mdb-color="warning">
<strong>Holy guacamole!</strong> You should check in on some of those fields below.
<button type="button" class="btn-close" data-mdb-dismiss="alert" aria-label="Close"></button>
</div>
Show
You can manually show alert using show() method.
Hidden alert!
<div class="alert fade" id="show-example" data-mdb-hidden="true" role="alert" data-mdb-color="primary">
Hidden alert!
</div>
mdb.Alert.getInstance(document.getElementById('show-example')).show();
Hide
You can manually hide alert using hide() method.
Hide me!
<div class="alert fade show mt-3" id="hide-example" role="alert" data-mdb-color="primary">
Hide me!
</div>
mdb.Alert.getInstance(document.getElementById('hide-example')).hide();
Placement
You can set the position of every alert using the
data-mdb-position attribute.
Select horizontal / vertical alignment
Current position: top-right
Show me wherever you want!
<div
class="alert fade mt-3"
id="placement-example"
data-mdb-position="top-right"
data-mdb-hidden="true"
data-mdb-width="25%"
role="alert"
data-mdb-color="primary"
>
Show me wherever you want!
</div>
mdb.Alert.getInstance(document.getElementById('placement-example')).show();
Container
You can display an alert anywhere. Just put it in your target element and fill the
data-mdb-container attribute with id or class of parent.
Hello from parent element!
<div
class="alert fade"
id="container-example"
role="alert"
data-mdb-container="#parent-container-example"
data-mdb-color="primary"
>
Hello from parent element!
</div>
mdb.Alert.getInstance(document.getElementById('container-example')).show();
Offset
You can set offset of your alert using a data-mdb-offset tag.
Offset: 100px
<div
class="alert fade"
id="offset-example"
data-mdb-hidden="true"
data-mdb-offset="100"
role="alert"
data-mdb-color="primary"
>
Offset: 100px
</div>
mdb.Alert.getInstance(document.getElementById('offset-example')).show();
Stacking
You can turn on stacking your alerts using the
data-mdb-stacking attribute.
<div class="container text-center">
<button type="button" class="btn btn-primary" id="stacking-trigger-example">
Show notification
</button>
</div>
let alertCount = 0;
function* colorGenerator(i) {
const colors = ['primary', 'warning', 'info', 'success', 'secondary', 'danger', 'light'];
while (true) {
yield colors[i];
i++;
if (i > colors.length - 1) {
i = 0;
}
}
}
const colorIterator = colorGenerator(0);
document.getElementById('stacking-trigger-example').addEventListener('click', () => {
alertCount++;
color = colorIterator.next().value;
const alert = document.createElement('div');
alert.innerHTML = `
<div class="d-flex justify-content-between">
<p class="mb-0"><strong>${alertCount}.</strong> Stacking alerts</p>
<button type="button" class="btn-close" data-mdb-dismiss="alert" aria-label="Close"></button>
</div>
`;
alert.classList.add('alert', 'fade');
document.body.appendChild(alert);
const alertInstance = new mdb.Alert(alert, {
color,
stacking: true,
hidden: true,
width: '450px',
position: 'bottom-right',
autohide: true,
delay: 5000,
});
alertInstance.show();
});
Stacking - Container
You can also stack alerts inside the container
<div class="container text-center" id="parent-stacking-container-example">
<button type="button" class="btn btn-primary mb-5" id="stacking-container-trigger-example">
Show notification
</button>
</div>
let alertCount = 0;
function* colorGenerator(i) {
const colors = ['primary', 'warning', 'info', 'success', 'secondary', 'danger', 'light'];
while (true) {
yield colors[i];
i++;
if (i > colors.length - 1) {
i = 0;
}
}
}
const colorIterator = colorGenerator(0);
document
.getElementById('stacking-container-trigger-example')
.addEventListener('click', () => {
alertCount++;
color = colorIterator.next().value;
const alert = document.createElement('div');
alert.innerHTML = `
<div class="d-flex justify-content-between">
<p class="mb-0"><strong>${alertCount}.</strong> Stacking alerts</p>
<button
type="button"
class="btn-close"
data-mdb-dismiss="alert"
aria-label="Close"
></button>
</div>
`;
alert.classList.add('alert', 'fade');
document.getElementById('parent-stacking-container-example').appendChild(alert);
const alertInstance = new mdb.Alert(alert, {
color,
stacking: true,
container: '#parent-stacking-container-example',
hidden: true,
width: '250px',
position: 'top-right',
autohide: true,
delay: 5000,
});
alertInstance.show();
});
Alerts - API
Usage
Via data attributes
<div class="alert alert-primary fade show" id="example" data-mdb-autohide="true" data-mdb-delay="2000" role="alert">
Example
</div>
Dismiss
Dismissal can be achieved with data attributes on a button within the alert as demonstrated below:
<button type="button" class="btn-close" data-mdb-dismiss="alert" aria-label="Close"></button>
or on a button outside the alert using the data-mdb-target as
demonstrated below:
<button type="button" class="btn-close" data-mdb-dismiss="alert" data-mdb-target="#my-alert" aria-label="Close"></button>
Via JavaScript
mdb.Alert.getInstance(document.getElementById('show-example')).update({
position: ...,
width: ...,
});
Via jQuery
Note: By default, MDB does not include jQuery and you have to add it to the project on your own.
$(document).ready(() => {
$('.example-class').alert(options);
});
Options
Options can be passed via data attributes or JavaScript. For data attributes, append the
option name to data-mdb-, as in data-mdb-delay="500".
| Name | Type | Default | Description |
|---|---|---|---|
position
|
String / null | null |
Sets a position for the alert - top-left | top-right | bottom-left | bottom-right |
delay |
Number | 1000 |
Sets the length of animation delay |
autohide
|
boolean | false |
Alerts will hide automatically or not |
width
|
String | 'unset' |
Sets width of alert |
container
|
String | - |
Defines id/class of the parent element |
offset |
Number | 10 |
Defines offset of the element |
stacking
|
Boolean | false |
Enables stacking alerts |
appendToBody
|
Boolean | false |
Appends element to the end of the body |
color
|
String / null | null |
Allows to set the color of an alert - primary | secondary | secondary | danger | warning | info | light | dark |
Methods
| Name | Description | Example |
|---|---|---|
show |
Manually shows an alert | myAlert.show() |
hide |
Manually hides an alert | myAlert.hide() |
close |
Manually hides an alert (deletes it from DOM) | myAlert.close() |
dispose
|
Removes an mdb.Alert instance |
myAlert.dispose()
|
getInstance
|
Static method which allows you to get the alert instance associated to a DOM element. |
Alert.getInstance(myAlert)
|
getOrCreateInstance
|
Static method which returns an alert instance associated to a DOM element or create a new one in case it wasn't initialized. |
Alert.getOrCreateInstance(myAlert)
|
update |
Updates options of an mdb.Alert instance |
myAlert.update({position: 'top-right'})
|
mdb.Alert.getInstance(document.getElementById('show-example')).show();
Events
| Name | Description |
|---|---|
close.mdb.alert
|
Fires immediately when the close instance method is called. |
closed.mdb.alert
|
Fired when the alert has been closed and CSS transitions have completed. |
const alert = document.getElementById('example')
alert.addEventListener('close.mdb.alert', () => {
// do something
});
Import
MDB UI KIT also works with module bundlers. Use the following code to import this component:
import { Alert } from 'mdb-ui-kit';
CSS variables
As part of MDB’s evolving CSS variables approach, alerts now uses local CSS variables on
.alert for enhanced real-time customization. Values for the CSS variables are set
via Sass, so Sass customization is still supported, too.
// .alert
--#{$prefix}alert-bg: transparent;
--#{$prefix}alert-padding-x: #{$alert-padding-x};
--#{$prefix}alert-padding-y: #{$alert-padding-y};
--#{$prefix}alert-margin-bottom: #{$alert-margin-bottom};
--#{$prefix}alert-color: inherit;
--#{$prefix}alert-border-color: transparent;
--#{$prefix}alert-border: #{$alert-border-width} solid var(--#{$prefix}alert-border-color);
--#{$prefix}alert-border-radius: #{$alert-border-radius};
// .alert-fixed
--#{$prefix}alert-fixed-z-index: #{$zindex-alert};
SCSS variables
$alert-zindex: 1070;
$alert-padding-y: 1.25rem;
$alert-padding-x: 1.5rem;
$alert-margin-bottom: 1rem;
$alert-border-radius: $border-radius-lg;
$alert-link-font-weight: $font-weight-bold;
$alert-border-width: $border-width;
$alert-bg-scale: -80%;
$alert-border-scale: -70%;
$alert-color-scale: 40%;
$alert-dismissible-padding-r: $alert-padding-x * 3;