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University Marketing and Communications

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Alerts

Provide contextual feedback messages for typical user actions with the handful of available and flexible alert messages.

Examples

Wrap any text and an optional dismiss button in .alert and one of the four contextual classes (e.g., .alert-success) for basic alert messages.

No default class

Alerts don't have default classes, only base and modifier classes. A default gray alert doesn't make too much sense, so you're required to specify a type via contextual class. Choose from success, info, warning, or danger.

<div class="alert alert-success" role="alert">...</div>
<div class="alert alert-info" role="alert">...</div>
<div class="alert alert-warning" role="alert">...</div>
<div class="alert alert-danger" role="alert">...</div>

Dismissible alerts

Build on any alert by adding an optional .alert-dismissible and close button.

Requires JavaScript alert plugin

For fully functioning, dismissible alerts, you must use the alerts JavaScript plugin.

<div class="alert alert-warning alert-dismissible" role="alert">
  <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>
  <strong>Warning!</strong> Better check yourself, you're not looking too good.
</div>

Ensure proper behavior across all devices

Be sure to use the <button> element with the data-dismiss="alert" data attribute.

Use the .alert-link utility class to quickly provide matching colored links within any alert.

<div class="alert alert-success" role="alert">
  <a href="#" class="alert-link">...</a>
</div>
<div class="alert alert-info" role="alert">
  <a href="#" class="alert-link">...</a>
</div>
<div class="alert alert-warning" role="alert">
  <a href="#" class="alert-link">...</a>
</div>
<div class="alert alert-danger" role="alert">
  <a href="#" class="alert-link">...</a>
</div>

Javascript behavior

Add dismiss functionality to all alert messages with this plugin.

When using a .close button, it must be the first child of the .alert-dismissible and no text content may come before it in the markup.

Usage

Just add data-dismiss="alert" to your close button to automatically give an alert close functionality. Closing an alert removes it from the DOM.

<button type="button" class="close" data-dismiss="alert" aria-label="Close">
  <span aria-hidden="true">&times;</span>
</button>

To have your alerts use animation when closing, make sure they have the .fade and .in classes already applied to them.

Methods

$().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 .in classes are present on the element, the alert will fade out before it is removed.

Events

Bootstrap's alert plugin exposes a few events for hooking into alert functionality.

Event Type 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). 
$('#myAlert').on('closed.bs.alert', function () {
  // do something…
})