Bootstrap Alert Example

Overview

The alerts are from these components you even really don't consider as far as you totally get to need them. They are put to use for offering quick in time comment for the user having interaction with the website hopefully pointing his or hers focus on a specific direction or evoking special actions.

The alerts are most commonly used together with forms to give the user a idea if a area has been completed wrong, which is the proper format expected or which is the condition of the submission once the submit button has been clicked.

As most of the elements in the Bootstrap framework the alerts also do have a well-kept predefined look and semantic classes which are used according to the particular condition where the Bootstrap Alert has been shown on display. Due to the fact that it's an alert notification it is necessary to take user's attention but still leave him in the zone of comfort nevertheless it might even be an error notification. ( get more information)

This gets accomplished due to the use of delicate toned color options each being intuitively attached to the semantic of the message information just like green for Success, Light Blue for regular details, Light yellow seeking for user's focus and Mild red specifying there is actually 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 option of the web link

It may not be spotted at a look but the font color option also is in fact following this color scheme as well-- just the colors are much much darker so get intuitively takened as dark but the truth is it's not exactly so.

Same runs not only for the alert text message in itself but even for the web links provided in it-- there are link classes getting rid of the outline and coloring the anchor elements in the correct color tone so they fit the overall alert text message look.

<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>

Other info for alerts

A aspect to indicate-- the color tones come with their clear interpretation only for those who really 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 simple HTML tags like strong as an example the alert elements in Bootstrap 4 can also have Headings and paragraphs for the cases when you wish to present a bit longer content ( recommended reading).

<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>

Dismiss 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 titled Success, Info, Warning and Danger. Do not allow however their titles to narrow down the manner in which you're using them-- all of these are just some color schemes and the way they will be actually implemented in your website is definitely up to you and completely depends on the individual scenario.

For example-- if the colour scheme of your page works with the red as basic color tone it may be really well-suited to display the alert for successful form submission in red too working with the predefined alert danger visual aspect in order to better blend with the webpage and save some time specifying your own classes.

The predefined alert classes are just some consistent appearances and the responsibility for using them lays entirely on the designer's shoulders.

JavaScript role of the Bootstrap Alert Design

Triggers

Enable termination of an alert by using JavaScript

$(".alert").alert()

Enable dismissal of an alert via JavaScript

Alternatively with information features on a button inside the alert, as indicated just above

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

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

Approaches

$().alert()

- Helps to make an alert listen for click events on descendant elements that have the data-dismiss=" alert" attribute. (Not necessary in case making use of 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 go out before it is gotten rid of.