JavaScript/jQuery NumberBox API

The NumberBox is a widget 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 NumberBox from "devextreme/ui/number_box"

DevExtreme widgets are integrated with many popular libraries and frameworks. See the Installation section (for JavaScript libraries) or the Prerequisites and Installation section (for ASP.NET MVC framework) to find details on setting up DevExtreme with a particular library or framework.

The following code shows how to create the NumberBox widget using every supported library and framework. For more details on working with widgets in these libraries and frameworks, see the Widget Basics topic for jQuery, Angular, AngularJS, Knockout or ASP.NET MVC.

jQuery

JavaScript

HTML

$(function () {
    $("#numberBox").dxNumberBox({
        value: 20,
        min: 16,
        max: 100,
        placeholder: 'Enter your age'
    });
});

<div id="numberBox"></div>

Angular

HTML

TypeScript

<dx-number-box
    [value]="20"
    [min]="16"
    [max]="100"
    placeholder="Enter your age">
</dx-number-box>

import { DxNumberBoxModule } from 'devextreme-angular';
// ...
export class AppComponent {
    // ...
}
@NgModule({
    imports: [
        // ...
        DxNumberBoxModule
    ],
    // ...
})

AngularJS

HTML

<div dx-number-box="{
    value: 20,
    min: 16,
    max: 100,
    placeholder: 'Enter your age'
}"></div>

Knockout

HTML

<div data-bind="dxNumberBox: {
    value: 20,
    min: 16,
    max: 100,
    placeholder: 'Enter your age'
}"></div>

ASP.NET MVC Controls

Razor C#

Razor VB

@(Html.DevExtreme().NumberBox()
    .ID("numberBox")
    .Value(20)
    .Min(16)
    .Max(100)
    .Placeholder("Enter your age")
)

@(Html.DevExtreme().NumberBox() _
    .ID("numberBox") _
    .Value(20) _
    .Min(16) _
    .Max(100) _
    .Placeholder("Enter your age")
)

View Demo

Configuration

An object defining configuration options for the NumberBox widget.

Name	Description
accessKey	Specifies the shortcut key that sets focus on the widget.
activeStateEnabled	Specifies whether or not the widget changes its state when interacting with a user.
disabled	Specifies whether the widget responds to user interaction.
elementAttr	Specifies the attributes to be attached to the widget's root element.
focusStateEnabled	Specifies whether the widget can be focused using keyboard navigation.
format	Specifies the value's display format and controls the user input according to it.
height	Specifies the widget's height.
hint	Specifies text for a hint that appears when a user pauses on the widget.
hoverStateEnabled	Specifies whether the widget 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 whether the editor's value is valid.
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 handler for the change event.
onContentReady	A handler for the contentReady event. Executed when the widget's content is ready. This handler may be executed multiple times during the widget's lifetime depending on the number of times its content changes.
onCopy	A handler for the copy event.
onCut	A handler for the cut event.
onDisposing	A handler for the disposing event. Executed when the widget is removed from the DOM using the remove(), empty(), or html() jQuery methods only.
onEnterKey	A handler for the enterKey event.
onFocusIn	A handler for the focusIn event.
onFocusOut	A handler for the focusOut event.
onInitialized	A handler for the initialized event. Executed only once, after the widget is initialized.
onInput	A handler for the input event.
onKeyDown	A handler for the keyDown event.
onKeyPress	A handler for the keyPress event.
onKeyUp	A handler for the keyUp event.
onOptionChanged	A handler for the optionChanged event. Executed after an option of the widget is changed.
onPaste	A handler for the paste event.
onValueChanged	A handler for the valueChanged event.
placeholder	The text displayed by the widget when the widget value is empty.
readOnly	A Boolean value specifying whether or not the widget is read-only.
rtlEnabled	Switches the widget to a right-to-left representation.
showClearButton	Specifies whether to display the Clear button in the widget.
showSpinButtons	Specifies whether to show the buttons that change the value by a step.
step	Specifies how much the widget's value changes when using the spin buttons, Up/Down arrow keys, or mouse wheel.
tabIndex	Specifies the number of the element when the Tab key is used for navigating.
text	The read-only option that holds the text displayed by the widget input element.
useLargeSpinButtons	Specifies whether to use touch friendly spin buttons. Applies only if showSpinButtons is true.
validationError	Specifies information on the validation error when using a custom validation engine. Should be changed at runtime along with the isValid option.
validationMessageMode	Specifies how the message about the validation rules that are not satisfied by this editor's value is displayed.
value	The current number box value.
valueChangeEvent	Specifies the DOM events after which the widget's value should be updated.
visible	Specifies whether the widget is visible.
width	Specifies the widget's width.

Methods

This section describes the members used to manipulate the widget.

Name	Description
beginUpdate()	Prevents the widget from refreshing until the endUpdate() method is called.
blur()	Removes focus from the input element.
defaultOptions(rule)	Specifies the device-dependent default configuration options for this component.
dispose()	Disposes of all the resources allocated to the NumberBox instance.
element()	Gets the root widget element.
endUpdate()	Refreshes the widget after a call of the beginUpdate() method.
focus()	Sets focus to the input element representing the widget.
getInstance(element)	Gets the instance of a widget found using its DOM node.
instance()	Gets the widget's instance. Use it to access other methods of the widget.
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 widget options.
option(optionName)	Gets the value of a single option.
option(optionName, optionValue)	Updates the value of a single option.
option(options)	Updates the values of several options.
registerKeyHandler(key, handler)	Registers a handler to be executed when a user presses a specific key.
repaint()	Repaints the widget. Call it if you made modifications that changed the widget's state to invalid.
reset()	Resets the value option to null.

Events

This section describes events fired by this widget.

Name	Description
change	Fires when a change within the widget's input element is committed by an end user.
contentReady	Raised when the widget's content is ready.
copy	Fires after the widget's input has been copied.
cut	Fires after the Cut DOM event has fired.
disposing	Raised when the widget is removed from the DOM using the remove(), empty(), or html() jQuery methods only.
enterKey	Fires after the Enter key has been pressed within the widget's input element.
focusIn	Fires after the widget's input has been focused.
focusOut	Fires after the widget's input element has lost focus.
initialized	Raised only once, after the widget is initialized.
input	Fires when a value within the widget's input element is changed by an end user.
keyDown	Fires when a key is pressed down within the widget's input element.
keyPress	Fires when the keypress DOM event has been raised for the current input element.
keyUp	Fires when a key is released within the widget's input element.
optionChanged	Raised after a widget option is changed.
paste	Fires after the widget's input has been pasted.
valueChanged	Fires when the editor value changes.

JavaScript/jQuery NumberBox API

jQuery

Angular

AngularJS

Knockout

ASP.NET MVC Controls

See Also

Configuration

Methods

Events

See Also