Provide contextual feedback messages for typical user actions with the handful of available and flexible alert messages.
Examples
Alerts are available for any length of text, as well as an optional dismiss button. For proper styling, use one of the eight required contextual classes (e.g., .alert-success). For inline dismissal, use the alerts jQuery plugin.
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!
Conveying meaning to assistive technologies
Using color to add meaning only provides a visual indication, which will not be conveyed to users of assistive technologies – such as screen readers. Ensure that information denoted by the color is either obvious from the content itself (e.g. the visible text), or is included through alternative means, such as additional text hidden with the .sr-only class.
Link color
Use the .alert-link utility class to quickly provide matching colored links within any alert.
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.
Outline
Outline alerts could be created for any length of text. 3 sizes available .alert-sm, md as default, .alert-lg. In addition of the use of the required alert classe .alert, mix the utilities class (e.g., .border .border-success .bg-transparent) to create outlined alerts. The logo required a contextual classe (e.g., .alert-icon .svg-success).
The text must be inside a div tag with padding and margin required class (e.g, .pl-3 .ml-3). Add a required class (.mt-2) to the logo for multiline alerts.
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Additional content
Alerts can also contain additional HTML 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.
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 Boosted JavaScript.
If you’re building our JavaScript from source, it requires util.js. The compiled version includes this.
Add a dismiss button and the .alert-dismissible class, which adds extra padding to the right of the alert and positions the .close button.
On the dismiss button, add the data-dismiss="alert" attribute, which triggers the JavaScript functionality. Be sure to use the <button> element with it for proper behavior across all devices.
To animate alerts when dismissing them, be sure to add the .fade and .show classes.
You can see this in action with a live demo:
Holy guacamole! You should check in on some of those fields below.
JavaScript behavior
Triggers
Enable dismissal of an alert via JavaScript:
Or with data attributes on a button within the alert, as demonstrated above:
Note that closing an alert will remove it from the DOM.
Methods
Method
Description
$().alert()
Makes an alert listen for click events on descendant elements which have the data-dismiss="alert" attribute. (Not necessary when using the data-api’s auto-initialization.)
$().alert('close')
Closes an alert by removing it from the DOM. If the .fade and .show classes are present on the element, the alert will fade out before it is removed.
$().alert('dispose')
Destroys an element’s alert.
Events
Boosted’s alert plugin exposes a few events for hooking into alert functionality.
Event
Description
close.bs.alert
This event fires immediately when the close instance method is called.
closed.bs.alert
This event is fired when the alert has been closed (will wait for CSS transitions to complete).