# DateInput

Single-date field with segmented text entry (month/day/year) plus a trigger that opens a popover month calendar. Values use `@internationalized/date` (`CalendarDate`).

## Examples

### Default

Pass a `label` and seed with `defaultValue` (or control via `value` / `onChange`).

```tsx
import { CalendarDate } from '@internationalized/date';
import { DateInput } from '@var-ui/react';

<DateInput label="Date" defaultValue={new CalendarDate(2026, 8, 12)} />
```

```astro
<!-- No Astro binding yet — use @var-ui/react -->
```

```html
<!-- No HTML demo yet — use @var-ui/react -->
```

### Description and error

Use `description` for helper copy and `errorMessage` for validation — setting `errorMessage` marks the field invalid.

```tsx
import { CalendarDate } from '@internationalized/date';
import { DateInput } from '@var-ui/react';

<DateInput
  label="Deadline"
  description="Must be a weekday"
  errorMessage="Pick a weekday"
  defaultValue={new CalendarDate(2026, 8, 15)}
/>
```

```astro
<!-- No Astro binding yet — use @var-ui/react -->
```

```html
<!-- No HTML demo yet — use @var-ui/react -->
```

## Props

| Name | Type | Required | Default | Description |
| --- | --- | --- | --- | --- |
| className | (ClassNameOrFunction<DatePickerRenderProps> & string) \| undefined | no | 'react-aria-DatePicker' | The CSS [className](https://developer.mozilla.org/en-US/docs/Web/API/Element/className) for the element. A function may be provided to compute the class based on component state. |
| description | string \| undefined | no |  | Helper text shown below the control when there is no error. |
| errorMessage | string \| undefined | no |  | Validation message; when set, the field is shown in an error state. |
| label | string \| undefined | no |  | Field label rendered above the segmented input. |
| aria-describedby | string \| undefined | no |  | Identifies the element (or elements) that describes the object. |
| aria-details | string \| undefined | no |  | Identifies the element (or elements) that provide a detailed, extended description for the object. |
| aria-label | string \| undefined | no |  | Defines a string value that labels the current element. |
| aria-labelledby | string \| undefined | no |  | Identifies the element (or elements) that labels the current element. |
| autoComplete | string \| undefined | no |  | Describes the type of autocomplete functionality the input should provide if any. See [MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#htmlattrdefautocomplete). |
| autoFocus | boolean \| undefined | no |  | Whether the element should receive focus on render. |
| defaultValue | T \| null \| undefined | no |  | The default value (uncontrolled). |
| dir | string \| undefined | no |  |  |
| form | string \| undefined | no |  | The `<form>` element to associate the input with. The value of this attribute must be the id of a `<form>` in the same document. See [MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/input#form). |
| hidden | boolean \| undefined | no |  |  |
| id | string \| undefined | no |  | The element's unique identifier. See [MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/id). |
| inert | boolean \| undefined | no |  |  |
| isDisabled | boolean \| undefined | no |  | Whether the input is disabled. |
| isInvalid | boolean \| undefined | no |  | Whether the input value is invalid. |
| isReadOnly | boolean \| undefined | no |  | Whether the input can be selected but not changed by the user. |
| isRequired | boolean \| undefined | no |  | Whether user input is required on the input before form submission. |
| lang | string \| undefined | no |  |  |
| name | string \| undefined | no |  | The name of the input element, used when submitting an HTML form. See [MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#htmlattrdefname). |
| onAnimationEnd | AnimationEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onAnimationEndCapture | AnimationEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onAnimationIteration | AnimationEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onAnimationIterationCapture | AnimationEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onAnimationStart | AnimationEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onAnimationStartCapture | AnimationEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onAuxClick | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onAuxClickCapture | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onBlur | ((e: FocusEvent<Element, Element>) => void) \| undefined | no |  | Handler that is called when the element loses focus. |
| onChange | ((value: MappedDateValue<T> \| null) => void) \| undefined | no |  | Handler that is called when the value changes. |
| onClick | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onClickCapture | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onContextMenu | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onContextMenuCapture | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onDoubleClick | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onDoubleClickCapture | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onFocus | ((e: FocusEvent<Element, Element>) => void) \| undefined | no |  | Handler that is called when the element receives focus. |
| onFocusChange | ((isFocused: boolean) => void) \| undefined | no |  | Handler that is called when the element's focus status changes. |
| onGotPointerCapture | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onGotPointerCaptureCapture | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onKeyDown | ((e: KeyboardEvent) => void) \| undefined | no |  | Handler that is called when a key is pressed. |
| onKeyUp | ((e: KeyboardEvent) => void) \| undefined | no |  | Handler that is called when a key is released. |
| onLostPointerCapture | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onLostPointerCaptureCapture | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onMouseDown | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onMouseDownCapture | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onMouseEnter | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onMouseLeave | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onMouseMove | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onMouseMoveCapture | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onMouseOut | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onMouseOutCapture | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onMouseOver | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onMouseOverCapture | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onMouseUp | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onMouseUpCapture | MouseEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerCancel | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerCancelCapture | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerDown | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerDownCapture | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerEnter | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerLeave | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerMove | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerMoveCapture | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerOut | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerOutCapture | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerOver | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerOverCapture | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerUp | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onPointerUpCapture | PointerEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onScroll | UIEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onScrollCapture | UIEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTouchCancel | TouchEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTouchCancelCapture | TouchEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTouchEnd | TouchEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTouchEndCapture | TouchEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTouchMove | TouchEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTouchMoveCapture | TouchEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTouchStart | TouchEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTouchStartCapture | TouchEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTransitionCancel | TransitionEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTransitionCancelCapture | TransitionEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTransitionEnd | TransitionEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTransitionEndCapture | TransitionEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTransitionRun | TransitionEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTransitionRunCapture | TransitionEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTransitionStart | TransitionEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onTransitionStartCapture | TransitionEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onWheel | WheelEventHandler<HTMLDivElement> \| undefined | no |  |  |
| onWheelCapture | WheelEventHandler<HTMLDivElement> \| undefined | no |  |  |
| render | DOMRenderFunction<"div", DatePickerRenderProps> \| undefined | no |  | Overrides the default DOM element with a custom render function. This allows rendering existing components with built-in styles and behaviors such as router links, animation libraries, and pre-styled components.  Requirements:  - You must render the expected element type (e.g. if `<button>` is expected, you cannot render an   `<a>`). - Only a single root DOM element can be rendered (no fragments). - You must pass through props and ref to the underlying DOM element, merging with your own prop   as appropriate. |
| slot | string \| null \| undefined | no |  | A slot name for the component. Slots allow the component to receive props from a parent component. An explicit `null` value indicates that the local props completely override all props received from a parent. |
| style | StyleOrFunction<DatePickerRenderProps> \| undefined | no |  | The inline [style](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/style) for the element. A function may be provided to compute the style based on component state. |
| translate | "yes" \| "no" \| undefined | no |  |  |
| validate | ((value: MappedDateValue<T>) => true \| ValidationError \| null \| undefined) \| undefined | no |  | A function that returns an error message if a given value is invalid. Validation errors are displayed to the user when the form is submitted if `validationBehavior="native"`. For realtime validation, use the `isInvalid` prop instead. |
| validationBehavior | "native" \| "aria" \| undefined | no | 'native' | Whether to use native HTML form validation to prevent form submission when the value is missing or invalid, or mark the field as required or invalid via ARIA. |
| value | T \| null \| undefined | no |  | The current value (controlled). |
| defaultOpen | boolean \| undefined | no |  | Whether the overlay is open by default (uncontrolled). |
| firstDayOfWeek | "sun" \| "mon" \| "tue" \| "wed" \| "thu" \| "fri" \| "sat" \| undefined | no |  | The day that starts the week. |
| granularity | Granularity \| undefined | no |  | Determines the smallest unit that is displayed in the date picker. By default, this is `"day"` for dates, and `"minute"` for times. |
| hideTimeZone | boolean \| undefined | no | false | Whether to hide the time zone abbreviation. |
| hourCycle | 12 \| 24 \| undefined | no |  | Whether to display the time in 12 or 24 hour format. By default, this is determined by the user's locale. |
| isDateUnavailable | ((date: DateValue) => boolean) \| undefined | no |  | Callback that is called for each date of the calendar. If it returns true, then the date is unavailable. |
| isOpen | boolean \| undefined | no |  | Whether the overlay is open by default (controlled). |
| maxValue | DateValue \| null \| undefined | no |  | The maximum allowed date that a user may select. |
| minValue | DateValue \| null \| undefined | no |  | The minimum allowed date that a user may select. |
| onOpenChange | ((isOpen: boolean) => void) \| undefined | no |  | Handler that is called when the overlay's open state changes. |
| pageBehavior | PageBehavior \| undefined | no | visible | Controls the behavior of paging. Pagination either works by advancing the visible page by visibleDuration (default) or one unit of visibleDuration. |
| placeholderValue | T \| null \| undefined | no |  | A placeholder date that influences the format of the placeholder shown when no value is selected. Defaults to today's date at midnight. |
| shouldCloseOnSelect | boolean \| (() => boolean) \| undefined | no | true | Determines whether the date picker popover should close automatically when a date is selected. |
| shouldForceLeadingZeros | boolean \| undefined | no |  | Whether to always show leading zeros in the month, day, and hour fields. By default, this is determined by the user's locale. |

## Accessibility

Built on React Aria `DatePicker`. Each date segment is a focusable spinbutton; the calendar trigger is a labeled button that opens a dialog with a keyboard-navigable grid. Keep `label` visible, and use `description` / `errorMessage` so assistive tech gets the same help and validation copy as sighted users.