Bootstrap/docs/components/alerts.md

---
layout: page
title: Alerts
---

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](#dismissing).

{% example html %}
<div class="alert alert-success" role="alert">
  <strong>Well done!</strong> You successfully read this important alert message.
</div>
<div class="alert alert-info" role="alert">
  <strong>Heads up!</strong> This alert needs your attention, but it's not super important.
</div>
<div class="alert alert-warning" role="alert">
  <strong>Warning!</strong> Better check yourself, you're not looking too good.
</div>
<div class="alert alert-danger" role="alert">
  <strong>Oh snap!</strong> Change a few things up and try submitting again.
</div>
{% endexample %}

### Link color

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

{% example html %}
<div class="alert alert-success" role="alert">
  <strong>Well done!</strong> You successfully read <a href="#" class="alert-link">this important alert message</a>.
</div>
<div class="alert alert-info" role="alert">
  <strong>Heads up!</strong> This <a href="#" class="alert-link">alert needs your attention</a>, but it's not super important.
</div>
<div class="alert alert-warning" role="alert">
  <strong>Warning!</strong> Better check yourself, you're <a href="#" class="alert-link">not looking too good</a>.
</div>
<div class="alert alert-danger" role="alert">
  <strong>Oh snap!</strong> <a href="#" class="alert-link">Change a few things up</a> and try submitting again.
</div>
{% endexample %}

### Dismissing

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 Bootstrap JavaScript.
- 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 `.in` classes.

You can see this in action with a live demo:

{% example html %}
<div class="alert alert-warning alert-dismissible fade in" role="alert">
  <button type="button" class="close" data-dismiss="alert" aria-label="Close">
    <span aria-hidden="true">&times;</span>
    <span class="sr-only">Close</span>
  </button>
  <strong>Holy guacamole!</strong> You should check in on some of those fields below.
</div>
{% endexample %}

## JavaScript behavior

### Triggers

Enable dismissal of an alert via JavaScript:

{% highlight js %}
$(".alert").alert()
{% endhighlight %}

Or with `data` attributes on a button **within the alert**, as demonstrated above:

{% highlight html %}
<button type="button" class="close" data-dismiss="alert" aria-label="Close">
  <span aria-hidden="true">&times;</span>
  <span class="sr-only">Close</span>
</button>
{% endhighlight %}

Note that closing an alert will remove it from the DOM.

### 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.

{% highlight js %}$(".alert").alert('close'){% endhighlight %}

### Events

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

<div class="table-responsive">
  <table class="table table-bordered table-striped">
    <thead>
      <tr>
        <th style="width: 150px;">Event Type</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>close.bs.alert</td>
        <td>This event fires immediately when the <code>close</code> instance method is called.</td>
      </tr>
      <tr>
        <td>closed.bs.alert</td>
        <td>This event is fired when the alert has been closed (will wait for CSS transitions to complete).</td>
      </tr>
    </tbody>
  </table>
</div>

{% highlight js %}
$('#myAlert').on('closed.bs.alert', function () {
  // do something…
})
{% endhighlight %}