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Alert Dialog

A modal window that alerts users with important information and awaits their acknowledgment or action.

	<script lang="ts">
  import { AlertDialog } from "bits-ui";
</script>
 
<AlertDialog.Root>
  <AlertDialog.Trigger
    class="inline-flex h-12 items-center
	justify-center whitespace-nowrap rounded-input bg-dark px-[21px]
	text-[15px] font-semibold text-background shadow-mini transition-all hover:bg-dark/95 active:scale-98"
  >
    Subscribe
  </AlertDialog.Trigger>
  <AlertDialog.Portal>
    <AlertDialog.Overlay
      class="fixed inset-0 z-50 bg-black/80 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0"
    />
    <AlertDialog.Content
      class="fixed left-[50%] top-[50%] z-50 grid w-full max-w-[94%] translate-x-[-50%] translate-y-[-50%] gap-4 rounded-card-lg border bg-background p-7 shadow-popover outline-none data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:max-w-lg md:w-full "
    >
      <div class="flex flex-col gap-4 pb-6">
        <AlertDialog.Title class="text-lg font-semibold tracking-tight"
          >Confirm your transaction</AlertDialog.Title
        >
        <AlertDialog.Description class="text-sm text-foreground-alt">
          This action cannot be undone. This will initiate a monthly wire in the
          amount of $10,000 to Huntabyte. Do you wish to continue?
        </AlertDialog.Description>
      </div>
      <div class="flex w-full items-center justify-center gap-2">
        <AlertDialog.Cancel
          class="inline-flex h-input w-full items-center justify-center rounded-input bg-muted text-[15px] font-medium shadow-mini transition-all hover:bg-dark-10 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-foreground focus-visible:ring-offset-2 focus-visible:ring-offset-background active:scale-98"
          >Cancel</AlertDialog.Cancel
        >
        <AlertDialog.Action
          class="inline-flex h-input w-full items-center justify-center rounded-input bg-dark text-[15px] font-semibold text-background shadow-mini transition-all hover:bg-dark/95 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-dark focus-visible:ring-offset-2 focus-visible:ring-offset-background active:scale-98"
          >Continue</AlertDialog.Action
        >
      </div>
    </AlertDialog.Content>
  </AlertDialog.Portal>
</AlertDialog.Root>

Structure

	<script lang="ts">
	import { AlertDialog } from "bits-ui";
</script>
 
<AlertDialog.Root>
	<AlertDialog.Trigger />
	<AlertDialog.Portal>
		<AlertDialog.Overlay />
		<AlertDialog.Content>
			<AlertDialog.Title />
			<AlertDialog.Description />
			<AlertDialog.Cancel />
			<AlertDialog.Action />
		</AlertDialog.Content>
	</AlertDialog.Portal>
</AlertDialog.Root>

API Reference

AlertDialog.Root

The root component used to set and manage the state of the alert dialog.

Property Type Description
open bindable prop
boolean

Whether or not the alert dialog is open.

Default: false
onOpenChange
function

A callback function called when the open state changes.

Default: undefined
children
Snippet

The children content to render.

Default: undefined

AlertDialog.Trigger

The element which opens the alert dialog on press.

Property Type Description
ref bindable prop
HTMLButtonElement

The underlying DOM element being rendered. You can bind to this to get a reference to the element.

Default: undefined
children
Snippet

The children content to render.

Default: undefined
child
Snippet

Use render delegation to render your own element. See delegation docs for more information.

Default: undefined

AlertDialog.Content

The content displayed within the alert dialog modal.

Property Type Description
onInteractOutside
function

Callback fired when an outside interaction event completes, which is either a pointerup, mouseup, or touchend event, depending on the user's input device. You can call event.preventDefault() to prevent the default behavior of handling the outside interaction.

Default: undefined
onInteractOutsideStart
function

Callback fired when an outside interaction event starts, which is either a pointerdown, mousedown, or touchstart event, depending on the user's input device. You can call event.preventDefault() to prevent the continuation of the outside interaction.

Default: undefined
onFocusOutside
function

Callback fired when focus leaves the dismissable layer. You can call event.preventDefault() to prevent the default behavior on focus leaving the layer.

Default: undefined
interactOutsideBehavior
enum

The behavior to use when an interaction occurs outside of the floating content. 'close' will close the content immediately. 'ignore' will prevent the content from closing. 'defer-otherwise-close' will defer to the parent element if it exists, otherwise it will close the content. 'defer-otherwise-ignore' will defer to the parent element if it exists, otherwise it will ignore the interaction.

Default: close
onEscapeKeydown
function

Callback fired when an escape keydown event occurs in the floating content. You can call event.preventDefault() to prevent the default behavior of handling the escape keydown event.

Default: undefined
escapeKeydownBehavior
enum

The behavior to use when an escape keydown event occurs in the floating content. 'close' will close the content immediately. 'ignore' will prevent the content from closing. 'defer-otherwise-close' will defer to the parent element if it exists, otherwise it will close the content. 'defer-otherwise-ignore' will defer to the parent element if it exists, otherwise it will ignore the interaction.

Default: close
onMountAutoFocus
function

Event handler called when auto-focusing the content as it is mounted. Can be prevented.

Default: undefined
onDestroyAutoFocus
function

Event handler called when auto-focusing the content as it is destroyed. Can be prevented.

Default: undefined
forceMount
boolean

Whether or not to forcefully mount the content. This is useful if you want to use Svelte transitions or another animation library for the content.

Default: false
preventOverflowTextSelection
boolean

When true, prevents the text selection from overflowing the bounds of the element.

Default: true
preventScroll
boolean

When true, prevents the body from scrolling when the content is open. This is useful when you want to use the content as a modal.

Default: true
ref bindable prop
HTMLDivElement

The underlying DOM element being rendered. You can bind to this to get a reference to the element.

Default: undefined
children
Snippet

The children content to render.

Default: undefined
child
Snippet

Use render delegation to render your own element. See delegation docs for more information.

Default: undefined

AlertDialog.Overlay

An overlay which covers the body when the alert dialog is open.

Property Type Description
forceMount
boolean

Whether or not to forcefully mount the content. This is useful if you want to use Svelte transitions or another animation library for the content.

Default: false
ref bindable prop
HTMLDivElement

The underlying DOM element being rendered. You can bind to this to get a reference to the element.

Default: undefined
children
Snippet

The children content to render.

Default: undefined
child
Snippet

Use render delegation to render your own element. See delegation docs for more information.

Default: undefined

AlertDialog.Portal

A portal which renders the alert dialog into the body when it is open.

Property Type Description
to
union

Where to render the content when it is open. Defaults to the body. Can be disabled by passing null

Default: body
disabled
boolean

Whether the portal is disabled or not. When disabled, the content will be rendered in its original DOM location.

Default: false
children
Snippet

The children content to render.

Default: undefined

AlertDialog.Action

A button used to close the alert dialog by taking an action.

Property Type Description
ref bindable prop
HTMLButtonElement

The underlying DOM element being rendered. You can bind to this to get a reference to the element.

Default: undefined
children
Snippet

The children content to render.

Default: undefined
child
Snippet

Use render delegation to render your own element. See delegation docs for more information.

Default: undefined

AlertDialog.Cancel

A button used to close the alert dialog without taking an action.

Property Type Description
ref bindable prop
HTMLButtonElement

The underlying DOM element being rendered. You can bind to this to get a reference to the element.

Default: undefined
children
Snippet

The children content to render.

Default: undefined
child
Snippet

Use render delegation to render your own element. See delegation docs for more information.

Default: undefined

AlertDialog.Title

An accessibile title for the alert dialog.

Property Type Description
level
union

The heading level of the title. This will be set as the aria-level attribute.

Default: 3
ref bindable prop
HTMLDivElement

The underlying DOM element being rendered. You can bind to this to get a reference to the element.

Default: undefined
children
Snippet

The children content to render.

Default: undefined
child
Snippet

Use render delegation to render your own element. See delegation docs for more information.

Default: undefined

AlertDialog.Description

An accessibile description for the alert dialog.

Property Type Description
ref bindable prop
HTMLDivElement

The underlying DOM element being rendered. You can bind to this to get a reference to the element.

Default: undefined
children
Snippet

The children content to render.

Default: undefined
child
Snippet

Use render delegation to render your own element. See delegation docs for more information.

Default: undefined

Examples

Controlled

If you want to control or be aware of the open state of the dialog from outside of the component, bind to the open prop.

	<script lang="ts">
	import { AlertDialog } from "bits-ui";
	let dialogOpen = false;
</script>
 
<button on:click={() => (dialogOpen = true)}>Open Dialog</button>
<AlertDialog.Root bind:open={dialogOpen}>
	<AlertDialog.Trigger />
	<AlertDialog.Portal>
		<AlertDialog.Overlay />
		<AlertDialog.Content>
			<AlertDialog.Title />
			<AlertDialog.Description />
			<AlertDialog.Cancel />
			<AlertDialog.Action />
		</AlertDialog.Content>
	</AlertDialog.Portal>
</AlertDialog.Root>