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layout | title | group |
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docs | Alerts | components |
[//]: # DO NOT EDIT IT WILL BE OVERWRITTEN - copy of bootstrap documentation generated by gulp docs:copy:bs-docs
{% callout info %} Bootstrap Reference Documentation This is a part of the reference documentation from Bootstrap. It is included here to demonstrate rendering with Material Design for Bootstrap default styling. See the Material Design section for more elements and customization options. {% endcallout %}
Provide contextual feedback messages for typical user actions with the handful of available and flexible alert messages.
Contents
- Will be replaced with the ToC, excluding the "Contents" header {:toc}
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.
{% example html %}
{% capture callout-include %}{% include callout-warning-color-assistive-technologies.md %}{% endcapture %} {{ callout-include | markdownify }}
Link color
Use the .alert-link
utility class to quickly provide matching colored links within any alert.
{% example html %}
Additional content
Alerts can also contain additional HTML elements like headings and paragraphs.
{% example html %}
Well done!
Aww yeah, you successfully read this important alert message. This example text is going to run a bit longer so that you can see how spacing within an alert works with this kind of content.
Whenever you need to, be sure to use margin utilities to keep things nice and tidy.
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 %}
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 %}
{% endhighlight %}Note that closing an alert will remove it from the DOM.
Methods
Method | Description |
---|---|
$().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.
Event | 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). |
{% highlight js %} $('#myAlert').on('closed.bs.alert', function () { // do something… }) {% endhighlight %}