Angular RadioGroup API

The RadioGroup is a widget that contains a set of radio buttons and allows an end user to make a single selection from the set.

import { DxRadioGroupModule } from "devextreme-angular"
Type: DxRadioGroupTypes.default

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Configuration

An object defining configuration options for the RadioGroup 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.
dataSource

Binds the widget to data.
disabled

Specifies whether the widget responds to user interaction.
displayExpr

Specifies the data field whose values should be displayed.
elementAttr

Specifies the attributes to be attached to the widget's root element.
focusStateEnabled

Specifies whether the widget can be focused using keyboard navigation.
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.
isValid

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

An alias for the itemTemplate property specified in React. Accepts a custom component. Refer to Using a Custom Component for more information.
itemRender

An alias for the itemTemplate property specified in React. Accepts a rendering function. Refer to Using a Rendering Function for more information.
items

An array of items displayed by the widget.
itemTemplate

Specifies a custom template for items.
layout

Specifies the radio group layout.
name

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

A function that is executed when the widget's content is ready and each time the content is changed.
onDisposing

A function that is executed before the widget is disposed of.
onInitialized

A function used in JavaScript frameworks to save the widget instance.
onOptionChanged

A function that is executed after a widget option is changed.
onValueChanged

A function that is executed after the widget's value is changed.
readOnly

Specifies whether the editor is read-only.
rtlEnabled

Switches the widget to a right-to-left representation.
tabIndex

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

Specifies the widget's value.
valueExpr

Specifies which data field provides unique values to the widget's value.
visible

Specifies whether the widget is visible.
width

Specifies the widget's width.

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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.
defaultOptions(rule)

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

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

Gets the root widget element.
endUpdate()

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

Sets focus on the widget.
getDataSource()

Gets the DataSource instance.
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 without reloading data. Call it to update the widget's markup.
reset()

Resets the value option to the default value.
resetOption(optionName)

Resets an option to its default value.

Events

This section describes events fired by this widget.

Name Description
contentReady

Raised when the widget's content is ready.
disposing

Raised before the widget is disposed of.
initialized

Raised only once, after the widget is initialized.
optionChanged

Raised after a widget option is changed.
valueChanged

Raised after the widget's value is changed.

See Also