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Alerts

Examples

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 .visually-hidden class.

Additional content

Dismissing

Add a close button with .alert-dismissible class and data-bs-dismiss="alert" attribute.

When an alert is dismissed, the element is completely removed from the page structure. If a keyboard user dismisses the alert using the close button, their focus will suddenly be lost and, depending on the browser, reset to the start of the page/document. For this reason, we recommend including additional JavaScript that listens for the `closed.bs.alert` event and programmatically sets `focus()` to the most appropriate location in the page. If you're planning to move focus to a non-interactive element that normally does not receive focus, make sure to add `tabindex="-1"` to the element.

JavaScript behavior

Triggers

Via api:

Via data attributes:

Methods

Constructor:

This makes an alert listen for click events on descendant elements which have the data-bs-dismiss="alert" attribute. (Not necessary when using the data-api’s auto-initialization.)

Method Description
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.
dispose Destroys an element's alert. (Removes stored data on the DOM element)
getInstance Static method which allows you to get the alert instance associated to a DOM element, you can use it like this: bootstrap.Alert.getInstance(alert)

Events

Event Description
close.bs.alert Fires immediately when the close instance method is called.
closed.bs.alert Fired when the alert has been closed and CSS transitions have completed.