- Usage
- Attributes
- mode
- type
- input-selector
- start-input-selector
- end-input-selector
- min
- max
- month-format
- format
- week-day-format
- locale
- maximum-nights
- minimum-nights
- number-of-months
- first-day-of-week
- blocked
- highlighted
- day-size
- allow-blocked-end-date
- allow-blocked-ranges
- src
- fullscreen
- open-after-select
- open-after-clear
- hide-keyboard-shortcuts-panel
- common attributes
- Actions
- Events
- Styling
- Validation
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amp-date-picker
Description
Provides a widget to select dates. The date picker can render as an overlay relative to input fields, or as a static calendar widget.
Required Scripts
<script async custom-element="amp-date-picker" src="https://cdn.ampproject.org/v0/amp-date-picker-1.0.js"></script>
Supported Layouts
Usage
The amp-date-picker
renders a calendar on a page that a user can select dates
from.
In this example, we display a fixed-height static calendar, where a user can select a single date:
<amp-date-picker layout="fixed-height" height="360"> </amp-date-picker>
In this example, the calendar displays as an overlay for the specific form field:
<form method="post" action-xhr="/form/echo-json/post" target="_blank"> <amp-date-picker mode="overlay" layout="container" input-selector="[name=deliverydate]" > <label for="deliverydate">Deliver Date:</label> <input type="text" name="deliverydate" /> </amp-date-picker> </form>
Display modes
The amp-date-picker
provides two modes to render the date picker: static (default) or overlay.
Static mode
By specifying mode="static"
, the amp-date-picker
renders a static calendar view. This is the default display mode; if no mode is specified, a static calendar is rendered.
For a static date picker, you must specify a size-defined layout, which can be one of: fixed
, fixed-height
, responsive
, fill
or flex-item
.
When the static
amp-date-picker is rendered in a <form>
, if there are no inputs specified with *input-selector
, the amp-date-picker creates hidden input elements (e.g., <input type="hidden" …
). The amp-date-picker names the elements as date
or start-date
and end-date
; if those names are already used in the form, the amp-date-picker attempts to name the input fields with the id
of the <amp-date-picker>
.
This example demonstrates using a static date picker in a form, where the user can select a date range in the calendar. As there are no *input-selector
attributes defined in the amp-date-picker, hidden input fields are automatically generated.
<form method="post" action-xhr="/form-post" target="_blank"> <fieldset> <label> <span>Your name</span> <input type="text" name="name" id="name" required /> </label> <label for="date">Your date</label> <amp-date-picker type="range" mode="static" id="date" layout="fixed-height" height="360" > <!-- automatically generates hidden input fields: <input type="hidden" name="start-date"> <input type="hidden" name="end-date"> --> </amp-date-picker> <input type="submit" value="Subscribe" /> </fieldset> <div submit-success> <template type="amp-mustache"> Success! Thanks {{name}} for choosing {{start-date}} and {{end-date}}. </template> </div> </form>
Overlay mode
By specifying mode="overlay"
, when the user clicks, focuses, or presses the down-arrow in an input field connected with the amp-date-picker, the calendar appears. The calendar overlay positions itself relative to the <amp-date-picker>
tag.
For an overlay date picker, you must specify layout="container"
and contain the input fields that it will render.
This example demonstrates using a overlay date picker in a form where the user can choose a date. The date picker is connected to a specific input field via the input-selector
attribute.
<form method="post" action-xhr="/form-post" target="_blank"> <input type="text" name="name" placeholder="Your Name" required /> <amp-date-picker type="single" mode="overlay" layout="container" input-selector="[name=date]" > <input type="text" name="date" placeholder="Your Date" /> </amp-date-picker> <input type="submit" value="Subscribe" /> <div submit-success> <template type="amp-mustache"> Success! Thanks {{name}} for choosing {{date}}. </template> </div> </form>
On touch devices, an amp-date-picker
in overlay mode automatically adds the
readonly
attribute to its <input>
elements.
This prevents the device's on-screen keyboard from opening unncessesarily.
To opt-out of this behavior, add the touch-keyboard-editable
attribute to the
<amp-date-picker>
element.
Selection types
The amp-date-picker
provides two types of dates to select:
single
: Select a single date within the date picker.range
: Select a date range within the date picker.
type="single"
By specifying type="single"
, the date picker attaches to a single input,
and the user can select a single date. This is the default selection type.
<amp-date-picker type="single" layout="fixed-height" height="360"> </amp-date-picker>
type="range"
By specifying type="range"
, the date picker attaches to two inputs,
and the user can select a date range with a starting date and ending date.
<amp-date-picker type="range" layout="fixed-height" height="360"> </amp-date-picker>
Date formats
amp-date-picker
attributes accept dates in ISO 8601 and RFC 5545 RRULE formats.
ISO 8601 formats dates as YYYY-MM-DD
and is the standard for sharing dates between electronic systems.
For example, ISO 8601 formats the date February 28 2018 as 2018-02-28
.
RFC 5545 Recurrence Rules (RRULEs)
standardize a format for specifying repeating dates.
For example, RFC 5545 formats Halloween as RRULE:FREQ=YEARLY;BYMONTH=10;BYMONTHDAY=31
.
More complex dates are also possible, such as the United States Thanksgiving holiday,
which is every November on the fourth Thursday: RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=+4TH
.
The API is not friendly to memorize, but there are various
RRULE generators available online.
Attributes
mode
Specifies how the date picker is rendered. Allowed values are:
static
(default): The date picker renders as an interactive calendar view.overlay
: The date picker calendar view is not rendered until the user interacts with required input field(s) nested in the<amp-date-picker>
.
type
Specifies the selection type for the date picker. Allowed values are:
single
(default): The user can select a single date.range
: The user can select a date range.
input-selector
A query selector for a single date picker's input. If this is omitted,
the date picker automatically generates a hidden input field, and assigns it
a name of date
or ${id}-date
using the date picker's id. If either of these conflict
with an existing element in the form, an error is emitted.
When amp-date-picker
loads, the input element's value is used to display the
initially selected date.
Specify the date
property via the src
attribute to set
an initial date dynamically.
<amp-date-picker type="single" mode="overlay" layout="container" input-selector="[name=deliverydate]" > <input type="text" name="deliverydate" placeholder="Delivery Date" /> </amp-date-picker>
start-input-selector
A query selector for a date range picker's start date input. If this is omitted,
the date picker automatically generates a hidden input field, and assigns it
a name of start-date
or ${id}-start-date
using the date picker's id. If either of these conflict
with an existing element in the form, an error is emitted.
When amp-date-picker
loads, the input element's value is used to display the
initially selected start date.
Specify the startDate
property via the src
attribute to set
an initial end date dynamically.
<input id="a2" /> <input id="b2" /> <amp-date-picker type="range" start-input-selector="#a2" end-input-selector="#b2" layout="fixed-height" height="360" > </amp-date-picker>
end-input-selector
A query selector for a date range picker's end date input. If this is omitted,
the date picker automatically generates a hidden input field, and assigns it
a name of end-date
or ${id}-end-date
using the date picker's id. If either of these conflict
with an existing element in the form, an error is emitted.
When amp-date-picker
loads, the input element's value is used to display the
initially selected end date.
Specify the endDate
property via the src
attribute to set
an initial end date dynamically.
<input id="a2" /> <input id="b2" /> <amp-date-picker type="range" start-input-selector="#a2" end-input-selector="#b2" layout="fixed-height" height="360" > </amp-date-picker>
min
The earliest date that the user may select. This must be formatted as an ISO 8601 date.
If no min
attribute is present, the current date will be the minimum date.
The min
attribute may be updated after a user gesture with amp-bind
.
max
The latest date that the user may select. This must be formatted as an ISO 8601 date.
If no max
attribute is present, the date picker will have no maximum date.
The max
attribute may be updated after a user gesture with amp-bind
.
month-format
The format to use for displaying the month in the calendar view.
The default format is: "MMMM YYYY"
.
format
The format to use for displaying and parsing the date in the input boxes.
The default format is "YYYY-MM-DD"
.
week-day-format
The format to use for displaying the day of the week in the calendar view.
If no week-day-format
is present, the weekdays display as the first character of the weekday.
<amp-date-picker type="single" mode="overlay" layout="container" format="MM/DD/YYYY" week-day-format="ddd" input-selector="[name=date]" > <input type="text" name="date" placeholder="Your Date" /> </amp-date-picker>
locale
The locale to use for rendering the calendar view. The default locale is "en"
.
maximum-nights
The number of nights that the user's selection may not exceed in a date range.
The default is "0"
.
A value of "0"
allows the user to select an unlimited number of nights.
minimum-nights
The number of nights that the user must select in a date range. The default is "1"
.
A value of "0"
allows users to select the same date for the start and end dates.
number-of-months
The number of months to display at one time in the calendar view. The default is "1"
.
first-day-of-week
The day to specify as the first day of the week (0-6). The default value is "0"
(Sunday).
blocked
A space-separated list of ISO 8601 dates or RFC 5545 RRULE repeating dates to prevent the user from selecting on the calendar.
highlighted
A space-separated list of ISO 8601 dates or RFC 5545 RRULE repeating dates to specially style as highlighted to draw the user's attention. Default styling is a blue dot on the date.
day-size
The size in px
of the date cells in the calendar view table. The default is 39
.
.amp-date-picker-resize-bug .DayPicker_transitionContainer { min-height: 354px; /* 354px is the default. You must update it. */ }
allow-blocked-end-date
If present, this attribute allows the user to choose an end date on the first blocked date after their chosen start date. By default, this attribute is not present.
allow-blocked-ranges
If present, this attribute allows the user to select a range containing blocked date(s). By default, this attribute is not present.
src
If present, amp-date-picker
requests JSON data to populate certain attributes dynamically, as well as matching lists of dates to template id
s for rendering days in the calendar.
If your calendar data is personalized for the user or updates often,
these values should be specified in the src
JSON response and not with their corresponding attributes on the amp-date-picker
element.
The following table lists the properties that you can specify in the JSON data:
src property |
Description |
---|---|
blocked |
An array of ISO 8601 single dates or RFC 5545 RRULE repeating dates to render as blocked in the calendar view. The user is prevented from selecting these dates. |
date |
Specifies the initially selected date. In a date picker with type="range" this has no effect. In order to prevent overwriting the user's input, this value has no effect if the user has already selected a date. |
endDate |
Specifies the initially selected end date. In a date picker with type="single" this has no effect. In order to prevent overwriting the user's input, this value has no effect if the user has already selected an end date. |
highlighted |
An array of ISO 8601 single dates or RFC 5545 RRULE repeating dates to render as highlighted in the calendar view. |
startDate |
Specifies the initially selected start date for a date picker with type="range" . In a date picker with type="single" this has no effect. In order to prevent overwriting the user's input, this value has no effect if the user has already selected a start date. |
templates |
The templates property is an array of "template definition objects". These objects have an id property and a dates property. |
The src
attribute may be updated after a user gesture with amp-bind
.
template definition objects
The dates
property is an array of ISO 8601 single dates or RFC 5545 RRULE repeating dates.
The id
property specifies the id
of a template that the date picker can use to
render the specified dates in the calendar view.
{ "id": "my-template-id", "dates": [ "2018-01-02", "FREQ=WEEKLY;DTSTART=20180101T000000Z;COUNT=52;WKST=SU;BYDAY=TU" ] }
If no dates
property is specified in a template definition object, the template
with the given id
will be used as the default template to render any dates
that do not have an explicitly specified template.
{"id": "my-default-template-id"}
Example: Specifying properties via the src
attribute
{ "blocked": ["2018-02-14"], "highlighted": ["2018-02-15"], "templates": [ { "id": "my-template-id", "dates": ["2018-01-01"] }, { "id": "my-second-template-id", "dates": [ "2018-01-02", "FREQ=WEEKLY;DTSTART=20180101T000000Z;COUNT=52;WKST=SU;BYDAY=TU" ] }, { "id": "my-default-template-id" } ], "startDate": "2018-01-01", "endDate": "2018-02-02", "date": "2018-02-03" }
Example: Markup using the src
attribute
<amp-date-picker src="https://www.example.com/date-data.json" layout="fixed-height" height="360" > <template type="amp-mustache" date-template id="my-template-id">⚡️</template> <template type="amp-mustache" date-template id="my-second-template-id" >🌮</template > <template type="amp-mustache" date-template id="my-default-template-id" >{{D}}</template > </amp-date-picker>
fullscreen
Renders the picker to fill the space available to it, like in a fullscreen lightbox.
This works best with layout="fill"
.
<input on="tap:lightbox.open" placeholder="Start" id="start" /> <input on="tap:lightbox.open" placeholder="End" id="end" /> <button on="tap:dp.clear">Clear</button> <amp-lightbox id="lightbox" layout="nodisplay"> <amp-date-picker id="date-picker" layout="fill" fullscreen type="range" number-of-months="12" start-input-selector="#start" end-input-selector="#end" on=" activate: lightbox.open; deactivate: lightbox.close" ></amp-date-picker> </amp-lightbox>
open-after-select
If present, keeps the date picker overlay open after the user selects a date or dates. By default, this attribute is not present.
open-after-clear
If present, keeps the date picker open after the user clears the date or dates. By default, this attribute is not present.
hide-keyboard-shortcuts-panel
If present, hides the keyboard shortcuts panel at the bottom of the picker. By default, this attribute is not present.
common attributes
This element includes common attributes extended to AMP components.
Actions
These actions may be triggered by other components using the on
attribute.
e.g. on="tap: date-picker.setDate(date=state.value)"
Read more about AMP Actions and Events.
clear
The clear
action clears the date value or values from the single date picker
or date range picker with the specified id
, e.g. date-picker
.
<button on="tap: date-picker.clear">Clear</button>
setDate
The setDate
action assigns the value of the date
argument to
the single date picker with the specified id
, e.g. date-picker
.
<button on="tap: date-picker.setDate(date='2018-01-01')"> Set to Jan 1, 2018 </button>
setDates
The setDate
action assigns the value of the start
and end
arguments to
the date range picker with the specified id
, e.g. date-picker
.
<button on="tap: date-picker.setDates(start='2018-01-01', end='2018-01-07')"> Set to Jan 1, 2018 through Jan 7, 2018 </button>
today
The today
action assigns the value of the current day,
plus an offset
argument, to the single date picker with the specified id
,
e.g. date-picker
. The offset
argument value can be any integer.
<button on="tap: date-picker.today">Today</button> <button on="tap: date-picker.today(offset=1)">Tomorrow</button> <button on="tap: date-picker.today(offset=-1)">Yesterday</button>
startToday
The startToday
action assigns the value of the current day,
plus an offset
argument, to the date range picker with the specified id
,
e.g. date-picker
. The offset
argument value can be any integer.
<button on="tap: date-picker.startToday">Today</button> <button on="tap: date-picker.startToday(offset=1)">Tomorrow</button> <button on="tap: date-picker.startToday(offset=-1)">Yesterday</button>
The startToday
action can be combined with the endToday
action
to select ranges with an offset.
<button on="tap:date-picker.startToday(offset=7), date-picker.endToday(offset=14)" > Next week </button>
endToday
The endToday
action assigns the value of the current day,
plus an offset
argument, to the date range picker with the specified id
,
e.g. date-picker
. The offset
argument value can be any integer.
<button on="tap: date-picker.endToday">Today</button> <button on="tap: date-picker.endToday(offset=1)">Tomorrow</button> <button on="tap: date-picker.endToday(offset=-1)">Yesterday</button>
The endToday
action can be combined with the startToday
action
to select ranges with an offset.
<button on="tap:date-picker.startToday(offset=7), date-picker.endToday(offset=14)" > Next week </button>
Events
These events may trigger actions on other AMP components using the on
attribute.
e.g. on="activate: my-lightbox.open"
Read more about AMP Actions and Events.
activate
The date picker triggers the activate
event when the user begins
an interaction with the calendar view, i.e. when the overlay would open.
deactivate
The date picker triggers the deactivate
event when the user ends
their interaction with the calendar view, i.e. when the overlay would close.
select
The date picker triggers the select
event when the user selects a date or
date range. When selecting a date range, the event is emitted when the end
date and start date are both selected.
The select
event contains the following properties.
For a single date picker:
Property | Description |
---|---|
date |
The date that was selected. |
id |
The id attribute of the first date template that applies to this date. |
<amp-date-picker type="single" on="select: AMP.setState({date: event.date, templateSelected: event.id})" … > <!-- … --> </amp-date-picker>
For a date range picker:
Property | Description |
---|---|
dates |
An array of the dates that were selected. Each object in the array contains the date and id properties from the single date picker change event object. |
start |
A shortcut for the first date in the date range (event.dates[0] ).
|
end |
A shortcut for the last date in the date range (event.dates[event.dates.length - 1] ).
|
<amp-date-picker type="range" on="select: AMP.setState({dates: event.dates, firstTemplate: event.start.id})" … > <!-- … --> </amp-date-picker>
Styling
Templates
amp-date-picker
provides a markup API to render templates for certain dates
and for an extra information area below the calendar view.
date-template
amp-date-picker
consumes templates specified in HTML markup to render dates.
These templates must only be used for dates that will not need to be updated
often, like holidays. For rendering special information in the calendar days
like days with sales, or amounts of money, or other information that must change
often, consider using the src
attribute instead.
Using src
prevents chached AMP documents from showing out-of-date information.
A date-template
must have a dates
or default
attribute.
- dates: A space-separated list of ISO 8601 single dates or RFC 5545 RRULE repeating dates. The template content will render for the dates matching the dates in the attribute.
- default: If the
default
attribute is present, the template content will render for all dates not matching an existing template.
The date picker provides mustache variables to render in the templates.
These variables are ISO 8601 format string values e.g. DD
, D
, X
, etc.
date-template
s may contain any valid AMP content and are only
rendered after the calendar view renders for the first time.
<amp-date-picker layout="fixed-height" height="360"> <!-- Render the "party" emoji on New Years Day 2018 --> <template type="amp-mustache" date-template dates="2018-01-01">🎉</template> <!-- Render the "taco" emoji every Tuesday for 52 weeks starting 2018-01-01 --> <template type="amp-mustache" date-template dates="FREQ=WEEKLY;DTSTART=20180101T000000Z;COUNT=52;WKST=SU;BYDAY=TU" >🌮</template > <!-- Render an image --> <template type="amp-mustache" date-template dates="2018-01-02"> <amp-img layout="fixed-height" height="39" src="./example.jpg"></amp-img> </template> <!-- Renders dates in the two-digit day format --> <template type="amp-mustache" date-template default>{{DD}}</template> </amp-date-picker>
info-template
The info-template
contains markup to render in an information area below
the calendar view. info-template
s may contain any valid AMP content and are only
rendered after the calendar view renders for the first time.
<amp-date-picker layout="fixed-height" height="360"> <template type="amp-mustache" info-template> Warning: Tacos are only available on Tuesday </template> </amp-date-picker>
Validation
See amp-date-picker rules in the AMP validator specification.
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