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 four required contextual classes (e.g., .alert-success). For inline dismissal, use the alerts jQuery plugin.
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.
Alerts can also contain additional HTML elements like headings, paragraphs and dividers.
As of Boosted, it’s recommended to wrap your additional content in a <div> to ensure proper alignment — and, for headings, to always use the .alert-heading class.
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:
Warning
Warning notification text goes here.
Danger
Error notification text goes here.
Description text goes here.
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).