Svelte Alert - Flowbite

Show contextual information to your users using alert elements based on Tailwind CSS

Alert: View Source Code

The alert component can be used to provide information to your users such as success or error messages, but also highlighted information complementing the normal flow of paragraphs and headers on a page. Flowbite also includes dismissable alerts which can be hidden by the users by clicking on the close icon.

Set up

Import Alert and set variables in the script tag.

<script>
  import { Alert } from 'flowbite-svelte';
</script>

Default alert

Use the following examples of alert components to show messages as feedback to your users.

<script>
  import {Alert} from "flowbite-svelte";
</script>
<Alert>
  <span class="font-medium">Info alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert color="red">
  <span class="font-medium">Danger alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert color="green">
  <span class="font-medium">Success alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert color="yellow">
  <span class="font-medium">Warning alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert color="dark">
  <span class="font-medium">Dark alert!</span> Change a few things up and try submitting again.
</Alert>

Alerts with icon

You can also include a descriptive icon to complement the message inside the alert component with the following example.

<Alert>
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
  </span>
  <span class="font-medium">Info alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert color="red">
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
  </span>
  <span class="font-medium">Danger alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert color="green">
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
  </span>
  <span class="font-medium">Success alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert color="yellow">
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
  </span>
  <span class="font-medium">Warning alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert color="dark">
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
  </span>
  <span class="font-medium">Dark alert!</span> Change a few things up and try submitting again.
</Alert>

Bordered alerts

Use this example to add a border accent to the alert component instead of just a plain background.

<Alert border>
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
  </span>
  <span class="font-medium">Info alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert border color="red">
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
  </span>
  <span class="font-medium">Danger alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert border color="green">
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
  </span>
  <span class="font-medium">Success alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert border color="yellow">
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
  </span>
  <span class="font-medium">Warning alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert border color="dark">
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
  </span>
  <span class="font-medium">Dark alert!</span> Change a few things up and try submitting again.
</Alert>

Alerts with list

Use this example to show a list and a description inside an alert component.

<Alert>
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
  </span>
  <span class="sr-only">Info</span>
  <span class="font-medium">Ensure that these requirements are met:</span>
  <ul slot="extra" class="mt-0 ml-8 list-disc list-inside">
    <li>At least 10 characters (and up to 100 characters)</li>
    <li>At least one lowercase character</li>
    <li>Inclusion of at least one special character, e.g., ! @ # ?</li>
  </ul>
</Alert>
<Alert color="red">
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
  </span>
  <span class="sr-only">Info</span>
  <span class="font-medium">Ensure that these requirements are met:</span>
  <ul slot="extra" class="mt-0 ml-8 list-disc list-inside">
    <li>At least 10 characters (and up to 100 characters)</li>
    <li>At least one lowercase character</li>
    <li>Inclusion of at least one special character, e.g., ! @ # ?</li>
  </ul>
</Alert>

Dismissable alerts

Use the following alert elements that are also dismissable.

<Alert dismissable>
    <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
    </span>
    A simple info alert with an <a href="/" class="font-semibold underline hover:text-blue-800 dark:hover:text-blue-900">example link</a>. Give it a click if you like.
  </Alert>
  <Alert color="red" dismissable>
    <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
    </span>
    A simple info alert with an <a href="/" class="font-semibold underline hover:text-red-800 dark:hover:text-red-900">example link</a>. Give it a click if you like.
  </Alert>
  <Alert color="green" dismissable>
    <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
    </span>
    A simple info alert with an <a href="/" class="font-semibold underline hover:text-green-800 dark:hover:text-green-900">example link</a>. Give it a click if you like.
  </Alert>
  <Alert color="yellow" dismissable>
    <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
    </span>
    A simple info alert with an <a href="/" class="font-semibold underline hover:text-yellow-800 dark:hover:text-yellow-900">example link</a>. Give it a click if you like.
  </Alert>
  <Alert color="dark" dismissable>
    <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg>
    </span>
    A simple info alert with an <a href="/" class="font-semibold underline hover:text-gray-800 dark:hover:text-white">example link</a>. Give it a click if you like.
</Alert>

Border accent

Use the following alert components with a border accent as an alternative style.

<Alert accent>
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg></span>
  <span class="font-medium">Info alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert color="red" accent>
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg></span>
  <span class="font-medium">Danger alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert color="green" accent>
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg></span>
  <span class="font-medium">Success alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert color="yellow" accent>
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg></span>
  <span class="font-medium">Warning alert!</span> Change a few things up and try submitting again.
</Alert>
<Alert color="dark" accent>
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg></span>
  <span class="font-medium">Dark alert!</span> Change a few things up and try submitting again.
</Alert>

Additional content

The following alert components can be used if you wish to disclose more information inside the element.

<Alert color="blue">
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg></span>
  <span class="text-lg font-medium">This is a info alert</span>
  <div slot="extra">
    <div class="mt-2 mb-4 text-sm">More info about this info alert goes here. 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.</div>
    <div class="flex gap-2">
      <Button size="xs"><svg aria-hidden="true" class="-ml-0.5 mr-2 h-4 w-4" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M10 12a2 2 0 100-4 2 2 0 000 4z"></path><path fill-rule="evenodd" d="M.458 10C1.732 5.943 5.522 3 10 3s8.268 2.943 9.542 7c-1.274 4.057-5.064 7-9.542 7S1.732 14.057.458 10zM14 10a4 4 0 11-8 0 4 4 0 018 0z" clip-rule="evenodd"></path></svg>View more</Button>
      <Button size="xs" outline color="blue" class="dark:!text-blue-800">Go to Home</Button>
    </div>
  </div>
</Alert>
<Alert color="red">
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg></span>
  <span class="text-lg font-medium">This is a info alert</span>
  <div slot="extra">
    <div class="mt-2 mb-4 text-sm">More info about this info alert goes here. 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.</div>
    <div class="flex gap-2">
      <Button size="xs" color="none" class="bg-red-700 dark:bg-red-800 text-white dark:text-white"><svg aria-hidden="true" class="-ml-0.5 mr-2 h-4 w-4" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M10 12a2 2 0 100-4 2 2 0 000 4z"></path><path fill-rule="evenodd" d="M.458 10C1.732 5.943 5.522 3 10 3s8.268 2.943 9.542 7c-1.274 4.057-5.064 7-9.542 7S1.732 14.057.458 10zM14 10a4 4 0 11-8 0 4 4 0 018 0z" clip-rule="evenodd"></path></svg>View more</Button>
      <Button size="xs" outline color="red" class="dark:text-red-700">Go to Home</Button>
    </div>
  </div>
</Alert>
<Alert color="green">
  <span slot="icon"><svg aria-hidden="true" class="w-5 h-5" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path fill-rule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z" clip-rule="evenodd"></path></svg></span>
  <span class="text-lg font-medium">This is a info alert</span>
  <div slot="extra">
    <div class="mt-2 mb-4 text-sm">More info about this info alert goes here. 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.</div>
    <div class="flex gap-2">
      <Button size="xs" color="green"><svg aria-hidden="true" class="-ml-0.5 mr-2 h-4 w-4" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><path d="M10 12a2 2 0 100-4 2 2 0 000 4z"></path><path fill-rule="evenodd" d="M.458 10C1.732 5.943 5.522 3 10 3s8.268 2.943 9.542 7c-1.274 4.057-5.064 7-9.542 7S1.732 14.057.458 10zM14 10a4 4 0 11-8 0 4 4 0 018 0z" clip-rule="evenodd"></path></svg>View more</Button>
      <Button size="xs" outline color="green" class="dark:text-green-800">Go to Home</Button>
    </div>
  </div>
</Alert>

Custom color

Use color='none' to disable coloring. Then use class to add your custom colors classes.

<Alert color='none' class='bg-sky-500 text-pink-700'>
  Your content
</Alert>

Events

Use the close event with dismissable prop.

<Alert dismissable on:close={closeAlert}>Close me</Alert>

Props

Alert

The component has the following props, type, and default values. See types page for type information.

Name Type Default
dismissable boolean false
accent boolean false

Frame

The component inherits the following props, type, and default values from Frame. See types page for type information.

Name Type Default
tag string 'div'
color | 'gray' | 'red' | 'yellow' | 'green' | 'indigo' | 'default' | 'purple' | 'pink' | 'blue' | 'light' | 'dark' | 'dropdown' | 'navbar' | 'navbarUl' | 'form' | 'none' 'default'
rounded boolean false
border boolean false
shadow boolean false
transition TransitionFunc | undefined undefined
params object {}
node HTMLElement | undefined undefined
use Action noop
options object {}

Slots

Name Description
default The first slot.
extra A slot after the default slot.

Forwarded Events

on:blur on:change on:click on:focus on:keydown on:keyup on:mouseenter on:mouseleave

References

Flowbite Alerts