amp-lightbox
Description
Displays elements in a full-viewport “lightbox” modal.
Required Scripts
<script async custom-element="amp-lightbox" src="https://cdn.ampproject.org/v0/amp-lightbox-0.1.js"></script>
Supported Layouts
Usage
The amp-lightbox
component defines child elements that display in a
full-viewport overlay/modal. When the user taps or clicks an element (e.g., a
button), the amp-lightbox
ID referenced in the clicked element's on
attribute triggers the lightbox to take up the full viewport and displays the
child elements of the amp-lightbox
.
For showing images in a lightbox, there's also the
<amp-image-lightbox>
component. To show a gallery of images in a lightbox, you can use
<amp-lightbox-gallery>
.
Attributes
id
A unique identifier for the lightbox.
layout
Must be set to nodisplay
.
animate-in
(optional)
Defines the style of animation for opening the lightbox. By default, this will
be set to fade-in
. Valid values are fade-in
, fly-in-bottom
, and
fly-in-top
.
The fly-in-top
and fly-in-bottom
animation presets modify the transform
property of the amp-lightbox
element. Do not rely on transforming the
amp-lightbox
element directly. If you need to apply a transform, set it on a
nested element instead.
data-close-button-aria-label
(optional)
Optional attribute used to set ARIA label for the autogenerated close button added for accessibility. By default the applied label is "Close the modal".
scrollable
(optional)
When the scrollable
attribute is present, the content of the lightbox can
scroll when overflowing the height of the lightbox.
Actions
open
(default)
Opens the lightbox.
close
Closes the lightbox.
Styling
You can style the amp-lightbox
with standard CSS.
Accessibility
Pressing the escape key on the keyboard or setting focus on an element outside
the lightbox closes the lightbox. Alternatively, setting the on
attribute on
one or more elements within the lightbox and setting its method to close
closes the lightbox when the element is tapped or clicked. Once closed, the
focus will be sent back to the trigger element.
For accessibility reasons, if the user does not provide a focus in the lightbox
on open (using autofocus
attribute or forcing focus on open), the focus will
be set on the first element using on:tap
. Otherwise, a close button only
visible to screen readers, optionally using data-close-button-aria-label
attribute value, will be created and focused on.
<button on="tap:quote-lb">See Quote</button> <amp-lightbox id="quote-lb" layout="nodisplay"> <blockquote> "Don't talk to me about JavaScript fatigue" - Horse JS </blockquote> <button on="tap:quote-lb.close">Nice!</button> </amp-lightbox>
Validation
See amp-lightbox
rules
in the AMP validator specification.
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