Angular NumberBox API

The NumberBox is a UI component that displays a numeric value and allows a user to modify it by typing in a value, and incrementing or decrementing it using the keyboard or mouse.

import { DxNumberBoxModule } from "devextreme-angular"
Selector: dx-number-box

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See Also
jQuery
Angular
Vue
React
jQuery
Angular
Vue
React

Properties

An object defining configuration properties for the NumberBox UI component.

Name Description
accessKey

Specifies the shortcut key that sets focus on the UI component.
activeStateEnabled

Specifies whether the UI component changes its state as a result of user interaction.
buttons

Allows you to add custom buttons to the input text field.
disabled

Specifies whether the UI component responds to user interaction.
elementAttr

Specifies the global attributes to be attached to the UI component's container element.
focusStateEnabled

Specifies whether the UI component can be focused using keyboard navigation.
format

Specifies the value's display format and controls user input accordingly.
height

Specifies the UI component's height.
hint

Specifies text for a hint that appears when a user pauses on the UI component.
hoverStateEnabled

Specifies whether the UI component changes its state when a user pauses on it.
inputAttr

Specifies the attributes to be passed on to the underlying HTML element.
invalidValueMessage

Specifies the text of the message displayed if the specified value is not a number.
isValid

Specifies or indicates whether the editor's value is valid.
label

Specifies a text string used to annotate the editor's value.
labelMode

Specifies the label's display mode.
max

The maximum value accepted by the number box.
min

The minimum value accepted by the number box.
mode

Specifies the value to be passed to the type attribute of the underlying <input> element.
name

The value to be assigned to the name attribute of the underlying HTML element.
onChange

A function that is executed when the UI component loses focus after the text field's content was changed using the keyboard.
onContentReady

A function that is executed when the UI component is rendered and each time the component is repainted.
onCopy

A function that is executed when the UI component's input has been copied.
onCut

A function that is executed when the UI component's input has been cut.
onDisposing

A function that is executed before the UI component is disposed of.
onEnterKey

A function that is executed when the Enter key has been pressed while the UI component is focused.
onFocusIn

A function that is executed when the UI component gets focus.
onFocusOut

A function that is executed when the UI component loses focus.
onInitialized

A function used in JavaScript frameworks to save the UI component instance.
onInput

A function that is executed each time the UI component's input is changed while the UI component is focused.
onKeyDown

A function that is executed when a user is pressing a key on the keyboard.
onKeyUp

A function that is executed when a user releases a key on the keyboard.
onOptionChanged

A function that is executed after a UI component property is changed.
onPaste

A function that is executed when the UI component's input has been pasted.
onValueChanged

A function that is executed after the UI component's value is changed.
placeholder

Specifies a text string displayed when the editor's value is empty.
readOnly

Specifies whether the editor is read-only.
rtlEnabled

Switches the UI component to a right-to-left representation.
showClearButton

Specifies whether to display the Clear button in the UI component.
showSpinButtons

Specifies whether to show the buttons that change the value by a step.
step

Specifies how much the UI component's value changes when using the spin buttons, Up/Down arrow keys, or mouse wheel.
stylingMode

Specifies how the UI component's text field is styled.
tabIndex

Specifies the number of the element when the Tab key is used for navigating.
text

A property that holds the UI component's value with applied format.
useLargeSpinButtons

Specifies whether to use touch friendly spin buttons. Applies only if showSpinButtons is true.
validationError

Information on the broken validation rule. Contains the first item from the validationErrors array.
validationErrors

An array of the validation rules that failed.
validationMessageMode

Specifies how the message about the validation rules that are not satisfied by this editor's value is displayed.
validationStatus

Indicates or specifies the current validation status.
value

The current number box value.
valueChangeEvent

Specifies the DOM events after which the UI component's value should be updated.
visible

Specifies whether the UI component is visible.
width

Specifies the UI component's width.

See Also
jQuery
Angular
Vue
React

Methods

This section describes the members used to manipulate the UI component.

Name Description
beginUpdate()

Prevents the UI component from refreshing until the endUpdate() method is called.
blur()

Removes focus from the input element.
defaultOptions(rule)

Specifies the device-dependent default configuration properties for this component.
dispose()

Disposes of all the resources allocated to the NumberBox instance.
element()

Gets the root UI component element.
endUpdate()

Refreshes the UI component after a call of the beginUpdate() method.
focus()

Sets focus to the input element representing the UI component.
getButton(name)

Gets an instance of a custom action button.
getInstance(element)

Gets the instance of a UI component found using its DOM node.
instance()

Gets the UI component's instance. Use it to access other methods of the UI component.
off(eventName)

Detaches all event handlers from a single event.
off(eventName, eventHandler)

Detaches a particular event handler from a single event.
on(eventName, eventHandler)

Subscribes to an event.
on(events)

Subscribes to events.
option()

Gets all UI component properties.
option(optionName)

Gets the value of a single property.
option(optionName, optionValue)

Updates the value of a single property.
option(options)

Updates the values of several properties.
registerKeyHandler(key, handler)

Registers a handler to be executed when a user presses a specific key.
repaint()

Repaints the UI component without reloading data. Call it to update the UI component's markup.
reset()

Resets the value property to null.
resetOption(optionName)

Resets a property to its default value.

Events

This section describes events fired by this UI component.

Name Description
change

Raised when the UI component loses focus after the text field's content was changed using the keyboard.
contentReady

Raised when the UI component's content is ready.
copy

Raised when the UI component's input has been copied.
cut

Raised when the UI component's input has been cut.
disposing

Raised before the UI component is disposed of.
enterKey

Raised when the Enter key has been pressed while the UI component is focused.
focusIn

Raised when the UI component gets focus.
focusOut

Raised when the UI component loses focus.
initialized

Raised only once, after the UI component is initialized.
input

Raised each time the UI component's input is changed while the UI component is focused.
keyDown

Raised when a user is pressing a key on the keyboard.
keyUp

Raised when a user releases a key on the keyboard.
optionChanged

Raised after a UI component property is changed.
paste

Raised when the UI component's input has been pasted.
valueChanged

Raised after the UI component's value is changed.

See Also
jQuery
Angular
Vue
React