Bootstrap Alerts

Alerts

Bootstrap provides an easy way to create predefined alert messages:

×Success! This alert box indicates a successful or positive action.

×Info! This alert box indicates a neutral informative change or action.

×Warning! This alert box indicates a warning that might need attention.

×Danger! This alert box indicates a dangerous or potentially negative action.

Alerts are created with the .alert class, followed by one of the four contextual classes .alert-success, .alert-info, .alert-warning or .alert-danger:

<div class="alert alert-success">
  <strong>Success!</strong> Indicates a successful or positive action.
</div>

<div class="alert alert-info">
  <strong>Info!</strong> Indicates a neutral informative change or action.
</div>

<div class="alert alert-warning">
  <strong>Warning!</strong> Indicates a warning that might need attention.
</div>

<div class="alert alert-danger">
  <strong>Danger!</strong> Indicates a dangerous or potentially negative action.
</div>

Closing Alerts

To close the alert message, add class="close" and data-dismiss="alert" to a link or a button element:

<div class="alert alert-success">
  <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
  <strong>Success!</strong> Indicates a successful or positive action.
</div>

	The aria-* attribute and × explanation To help improve accessibility for people using screen readers, you should include the aria-label="close" attribute, when creating a close button. × (×) is an HTML entity that is the preferred icon for close buttons, rather than the letter "x".

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Animated Alerts

The .fade and .in classes adds a fading effect when closing the alert message:

<div class="alert alert-success fade in">