Bootstrap JS Alert Reference

Bootstrap JS Alert

JS Alert (alert.js)

The alert plugin include options and methods to close alert messages.

For a tutorial about Alerts, read our Bootstrap Alerts Tutorial.

The Alert Plugin Classes

Class Description Example
.alert Creates an alert message box Try it
.alert-danger Red alert. Indicates a dangerous or potentially negative action Try it
.alert-dismissible Indicates a closable alert box. Together with the .close class, this class is used to close the alert (adds extra padding) Try it
.alert-info Light-blue alert.Indicates a neutral informative change or action Try it
.alert-link Used on links inside alerts to provide matching colored links Try it
.alert-success Green alert. Indicates a successful or positive action Try it
.alert-warning Yellow alert. Indicates caution should be taken with this action Try it
.close Styles the close button for the alert message (floats right with a specified font-size, color, etc.) Try it

Close Alerts Via data-* Attributes

Add data-dismiss="alert" to a link or a button element to close the alert message.


<a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
Try it Yourself »

Close Alerts Via JavaScript

Close manually with:


Try it Yourself »

Alert Options


Alert Methods

The following table lists all available alert methods.

Method Description Try it
.alert("close") Closes the alert message Try it

Alert Events

The following table lists all available alert events.

Event Description Try it Occurs when the alert message is about to be closed Try it Occurs when the alert message has been closed Try it