Bootstrap Alert Example

Overview

The alerts are created by these components you even do not think of till you actually get to need them. They are used for providing prompt in time feedback for the user interacting with the web-site hopefully aiming his or hers focus to a specific course or evoking specific actions.

The alerts are most commonly used along with forms to give the user a tip if a field has been filled in wrongly, which is the proper format expected or which is the status of the submission as soon as the submit button has been clicked.

As the majority of the elements in the Bootstrap framework the alerts also do have a nice predefined look and semantic classes which are used according to the particular circumstance in which the Bootstrap Alert has been displayed on display screen. Because it's an alert notification it is necessary to obtain user's interest but still keep him in the zone of comfort nevertheless it might even be an error message. ( recommended reading)

This gets achieved by the use of gentle pale colors each being intuitively been connected to the semantic of the message content like green for Success, Light Blue for general info, Light yellow desiring for user's focus and Mild red revealing there is in fact something wrong.

<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>

Color of the web links

It may possibly not be seen at a look but the font color option itself is in fact following this color scheme too-- just the colors are much much darker so get subconsciously taken black nevertheless it's not exactly so.

Same works not only for the alert message itself but also for the web links incorporated in it-- there are link classes taking out the outline and colouring the anchor elements in the correct colour so they fit the overall alert message appearance.

<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>

More relevant information for alerts

A detail to mention-- the color options take their clear interpretation only for those who actually get to check out them. It's a good thing to either make sure the visible text itself carries the meaning of the alert well enough or to eventually add some additional descriptions to only be seen by the screen readers in order to grant the page's accessibility.

Together with links and basic HTML tags like strong for example the alert elements in Bootstrap 4 can also have Headings and paragraphs for the situations when you want to showcase a bit longer content ( more hints).

<div class="alert alert-success" role="alert">
  <h4 class="alert-heading">Well done!</h4>
  <p>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.</p>
  <p class="mb-0">Whenever you need to, be sure to use margin utilities to keep things nice and tidy.</p>
</div>

Decline the alert

Once more ensure the visual comfort of the visitors, you can also add an X icon to dismiss the alert and add a cool transition to it to.

<div class="alert alert-warning alert-dismissible fade show" role="alert">
  <button type="button" class="close" data-dismiss="alert" aria-label="Close">
    <span aria-hidden="true">×</span>
  </button>
  <strong>Holy guacamole!</strong> You should check in on some of those fields below.
</div>

Currently there are four varieties of contextual alert messages in Bootstrap 4 framework - they are called Success, Info, Warning and Danger. Do not let however their names to decrease the manner in which you're using them-- all of these are simply a number of color schemes and the way they will be actually implemented in your site is completely up to you and completely depends on the individual case.

For example-- if the color design of your page works with the red as primary color tone it maybe really well-suited to display the alert for successful form submission in red as well making use of the predefined alert danger appearance in order to better blend with the page and save time specifying your own classes.

After all the predefined alert classes are nothing but some consistent appearances and the responsibility for working with them lays entirely on the designer's shoulders.

JavaScript activity of the Bootstrap Alert Design

Triggers

Enable dismissal of an alert through JavaScript

$(".alert").alert()

Enable dismissal of an alert via JavaScript

Or else with information features on a button within the alert, as shown just above

<button type="button" class="close" data-dismiss="alert" aria-label="Close">
  <span aria-hidden="true">×</span>
</button>

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

Options

$().alert()

- Helps make an alert listen for click events on descendant elements which have the data-dismiss=" alert" attribute. (Not required whenever using the data-api's auto-initialization).

$().alert('close')

- Closes up an alert through taking it out from the DOM. If the.fade and.show classes are present on the element, the alert will fade out just before it is taken out.