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Angular Bootstrap alerts

Angular Alerts - Bootstrap 4 & Material Design

Note: This documentation is for an older version of Bootstrap (v.4). A newer version is available for Bootstrap 5. We recommend migrating to the latest version of our product - Material Design for Bootstrap 5.
Go to docs v.5

Bootstrap alerts are feedback messages which are displayed after specific actions preceded by the user. Length of the text is not limited.

With the right use of colors, they add some emotional weight to our information, ranging from a simple warning to critical system failure or from an operation success to a neutral information.

Basic 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).


<div class="alert alert-primary" role="alert">
  This is a primary alert—check it out!
</div>
<div class="alert alert-secondary" role="alert">
  This is a secondary alert—check it out!
</div>
<div class="alert alert-success" role="alert">
  This is a success alert—check it out!
</div>
<div class="alert alert-danger" role="alert">
  This is a danger alert—check it out!
</div>
<div class="alert alert-warning" role="alert">
  This is a warning alert—check it out!
</div>
<div class="alert alert-info" role="alert">
  This is a info alert—check it out!
</div>
<div class="alert alert-light" role="alert">
  This is a light alert—check it out!
</div>
<div class="alert alert-dark" role="alert">
  This is a dark alert—check it out!
</div>

Alert additional content


<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>
  <hr>
  <p class="mb-0">Whenever you need to, be sure to use margin utilities to keep things nice and tidy.</p>
</div>

Alert dismissing


<div #alert class="alert alert-warning alert-dismissible fade show" role="alert">
  <button type="button" class="close" aria-label="Close" (click)="closeAlert()">
    <span aria-hidden="true">&times;</span>
  </button>
  <strong>Holy guacamole!</strong> You should check in on some of those fields below.
</div>
                

import { Component, ViewChild, ElementRef } from '@angular/core';

@Component({
  selector: 'dismiss-alert',
  templateUrl: './dismiss-alert.component.html'
})
export class DismissAlertComponent {
  @ViewChild('alert', { static: true }) alert: ElementRef;

  closeAlert() {
    this.alert.nativeElement.classList.remove('show');
  }

}