Vaadin WC API reference

Description

<vaadin-time-picker> is a Web Component providing a time-selection field.

<vaadin-time-picker></vaadin-time-picker>
timePicker.value = '14:30';

When the selected value is changed, a value-changed event is triggered.

Styling

The following custom properties are available for styling:

Custom property Description Default
--vaadin-field-default-width Default width of the field 12em
--vaadin-time-picker-overlay-width Width of the overlay auto
--vaadin-time-picker-overlay-max-height Max height of the overlay 65vh

The following shadow DOM parts are available for styling:

Part name Description
label The label element
input-field The element that wraps prefix, value and buttons
clear-button The clear button
error-message The error message element
helper-text The helper text element wrapper
required-indicator The required state indicator element
toggle-button The toggle button
overlay The overlay container
content The overlay content

The following state attributes are available for styling:

Attribute Description
disabled Set when the element is disabled
has-value Set when the element has a value
has-label Set when the element has a label
has-helper Set when the element has helper text or slot
has-error-message Set when the element has an error message
has-tooltip Set when the element has a slotted tooltip
invalid Set when the element is invalid
focused Set when the element is focused
focus-ring Set when the element is keyboard focused
readonly Set when the element is readonly
opened Set when the overlay is opened

Internal components

In addition to <vaadin-time-picker> itself, the following internal components are themable:

See Styling Components documentation.

Change events

Depending on the nature of the value change that the user attempts to commit e.g. by pressing Enter, the component can fire either a change event or an unparsable-change event:

Value change Event
empty => parsable change
empty => unparsable unparsable-change
parsable => empty change
parsable => parsable change
parsable => unparsable change
unparsable => empty unparsable-change
unparsable => parsable change
unparsable => unparsable unparsable-change

Properties

accessibleName

Type: string | null | undefined

String used to label the component to screen reader users.

accessibleNameRef

Type: string | null | undefined

Id of the element used as label of the component to screen reader users.

allowedCharPattern

Type: string

A pattern matched against individual characters the user inputs.

When set, the field will prevent:

  • keydown events if the entered key doesn't match /^allowedCharPattern$/
  • paste events if the pasted text doesn't match /^allowedCharPattern*$/
  • drop events if the dropped text doesn't match /^allowedCharPattern*$/

For example, to allow entering only numbers and minus signs, use: allowedCharPattern = "[\\d-]"

autofocus

Type: boolean

Specify that this control should have input focus when the page loads.

autoOpenDisabled

Type: boolean | null | undefined

Set true to prevent the overlay from opening automatically.

autoselect

Type: boolean

If true, the input text gets fully selected when the field is focused using click or touch / tap.

clearButtonVisible

Type: boolean

Set to true to display the clear icon which clears the input.

It is up to the component to choose where to place the clear icon: in the Shadow DOM or in the light DOM. In any way, a reference to the clear icon element should be provided via the clearElement getter.

disabled

Type: boolean

If true, the user cannot interact with this element.

errorMessage

Type: string | null | undefined

Error to show when the field is invalid.

helperText

Type: string | null | undefined

String used for the helper text.

i18n

Type: TimePickerI18n

The object used to localize this component. To change the default localization, replace this with an object that provides both the time parsing and formatting functions.

The object has the following JSON structure:

{
  // A function to format given `Object` as
  // time string. Object is in the format `{ hours: ..., minutes: ..., seconds: ..., milliseconds: ... }`
  formatTime: (time) => {
    // returns a string representation of the given
    // object in `hh` / 'hh:mm' / 'hh:mm:ss' / 'hh:mm:ss.fff' - formats
  },

  // A function to parse the given text to an `Object` in the format
  // `{ hours: ..., minutes: ..., seconds: ..., milliseconds: ... }`.
  // Must properly parse (at least) text
  // formatted by `formatTime`.
  parseTime: text => {
    // Parses a string in object/string that can be formatted by`formatTime`.
  }
}

NOTE: formatTime and parseTime must be implemented in a compatible manner to ensure the component works properly.

See also: TimePickerI18n

invalid

Type: boolean

Set to true when the field is invalid.

label

Type: string | null | undefined

The label text for the input node. When no light dom defined via [slot=label], this value will be used.

manualValidation

Type: boolean

Set to true to enable manual validation mode. This mode disables automatic constraint validation, allowing you to control the validation process yourself. You can still trigger constraint validation manually with the validate() method or use checkValidity() to assess the component's validity without affecting the invalid state. In manual validation mode, you can also manipulate the invalid property directly through your application logic without conflicts with the component's internal validation.

max

Type: string

Maximum time allowed.

Supported time formats are in ISO 8601:

  • hh:mm
  • hh:mm:ss
  • hh:mm:ss.fff

min

Type: string

Minimum time allowed.

Supported time formats are in ISO 8601:

  • hh:mm
  • hh:mm:ss
  • hh:mm:ss.fff

name

Type: string

The name of this field.

opened

Type: boolean

True if the dropdown is open, false otherwise.

pattern

Type: string

A regular expression that the value is checked against. The pattern must match the entire value, not just some subset.

placeholder

Type: string

A hint to the user of what can be entered in the field.

readonly

Type: boolean

When present, it specifies that the field is read-only.

required

Type: boolean

Specifies that the user must fill in a value.

step

Type: number | null | undefined

Defines the time interval (in seconds) between the items displayed in the time selection box. The default is 1 hour (i.e. 3600).

It also configures the precision of the value string. By default the component formats values as hh:mm but setting a step value lower than one minute or one second, format resolution changes to hh:mm:ss and hh:mm:ss.fff respectively.

Unit must be set in seconds, and for correctly configuring intervals in the dropdown, it need to evenly divide a day.

Note: it is possible to define step that is dividing an hour in inexact fragments (i.e. 5760 seconds which equals 1 hour 36 minutes), but it is not recommended to use it for better UX experience.

title

Type: string

The text usually displayed in a tooltip popup when the mouse is over the field.

value

Type: string

The time value for this element.

Supported time formats are in ISO 8601:

  • hh:mm (default)
  • hh:mm:ss
  • hh:mm:ss.fff

Methods

checkValidity

Type: (() => boolean) & (() => boolean)

Returns true if the current input value satisfies all constraints (if any). You can override this method for custom validations.

clear

Type: () => void

Clear the value of the field.

close

Type: () => void

Closes the dropdown list.

open

Type: () => void

Opens the dropdown list.

validate

Type: () => boolean

Validates the field and sets the invalid property based on the result.

The method fires a validated event with the result of the validation.

Events

change

Type: TimePickerChangeEvent

Fired when the user commits a value change.

input

Type: CustomEvent

Fired when the value is changed by the user: on every typing keystroke, and the value is cleared using the clear button.

invalid-changed

Type: TimePickerInvalidChangedEvent

Fired when the invalid property changes.

opened-changed

Type: TimePickerOpenedChangedEvent

Fired when the opened property changes.

validated

Type: TimePickerValidatedEvent

Fired whenever the field is validated.

value-changed

Type: TimePickerValueChangedEvent

Fired when the value property changes.

Types

TimePickerChangeEvent

/**
 * Fired when the user commits a value change.
 */
export type TimePickerChangeEvent = Event & {
  target: TimePicker;
};

TimePickerI18n

export interface TimePickerI18n {
  parseTime?(time: string): TimePickerTime | undefined;

  formatTime?(time: TimePickerTime | undefined): string;
}

TimePickerInvalidChangedEvent

/**
 * Fired when the `invalid` property changes.
 */
export type TimePickerInvalidChangedEvent = CustomEvent<{ value: boolean }>;

TimePickerOpenedChangedEvent

/**
 * Fired when the `opened` property changes.
 */
export type TimePickerOpenedChangedEvent = CustomEvent<{ value: boolean }>;

TimePickerTime

/**
 * @license
 * Copyright (c) 2018 - 2025 Vaadin Ltd.
 * This program is available under Apache License Version 2.0, available at https://vaadin.com/license/
 */

export interface TimePickerTime {
  hours: number | string;
  minutes: number | string;
  seconds?: number | string;
  milliseconds?: number | string;
}

TimePickerValidatedEvent

/**
 * Fired whenever the field is validated.
 */
export type TimePickerValidatedEvent = CustomEvent<{ valid: boolean }>;

TimePickerValueChangedEvent

/**
 * Fired when the `value` property changes.
 */
export type TimePickerValueChangedEvent = CustomEvent<{ value: string }>;