All docs
V20.2
21.2
21.1
20.2
20.1
19.2
The page you are viewing does not exist in version 19.2. This link will take you to the root page.
19.1
The page you are viewing does not exist in version 19.1. This link will take you to the root page.
18.2
The page you are viewing does not exist in version 18.2. This link will take you to the root page.
18.1
The page you are viewing does not exist in version 18.1. This link will take you to the root page.
17.2
The page you are viewing does not exist in version 17.2. This link will take you to the root page.
A newer version of this page is available. Switch to the current version.

Keyboard Support

An end user can use the following keys to interact with the UI component.

Key Action
↑ or Page Up Moves focus to the previous radio button.
↓ or Page Down Moves focus to the next radio button.
Home / End Moves focus to the first/last radio button.
Enter or Space Selects the focused radio button.

You can implement a custom handler for a key using the registerKeyHandler(key, handler) method.

jQuery
JavaScript
function registerKeyHandlers () {
    const radioGroup = $("#radioGroupContainer").dxRadioGroup("instance");
    radioGroup.registerKeyHandler("backspace", function(e) {
        // The argument "e" contains information on the event
    });
    radioGroup.registerKeyHandler("space", function(e) {
        // ...
    });
}
Angular
TypeScript
import { ..., ViewChild, AfterViewInit } from '@angular/core';
import { DxRadioGroupModule, DxRadioGroupComponent } from 'devextreme-angular';
// ...
export class AppComponent implements AfterViewInit {
    @ViewChild(DxRadioGroupComponent, { static: false }) radioGroup: DxRadioGroupComponent;
    // Prior to Angular 8
    // @ViewChild(DxRadioGroupComponent) radioGroup: DxRadioGroupComponent;

    ngAfterViewInit () {
        this.radioGroup.instance.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.radioGroup.instance.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}
@NgModule({
    imports: [
        // ...
        DxRadioGroupModule
    ],
    // ...
})
Vue
<template>
    <DxRadioGroup :ref="myRadioGroupRef" />
</template>
<script>
import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import DxRadioGroup from 'devextreme-vue/radio-group';

const myRadioGroupRef = 'my-radio-group';

export default {
    components: {
        DxRadioGroup
    },
    data() {
        return {
            myRadioGroupRef
        }
    },
    computed: {
        radioGroup: function() {
            return this.$refs[myRadioGroupRef].instance;
        }
    },
    mounted: function() {
        this.radioGroup.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.radioGroup.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}
</script>
React
App.js
import React from 'react';
import 'devextreme/dist/css/dx.common.css';
import 'devextreme/dist/css/dx.light.css';

import { RadioGroup } from 'devextreme-react/radio-group';

class App extends React.Component {
    constructor(props) {
        super(props);

        this.radioGroupRef = React.createRef();
    }

    render() {
        return (
            <RadioGroup ref={this.radioGroupRef} />
        );
    }

    get radioGroup() {
        return this.radioGroupRef.current.instance;
    }

    componentDidMount() {
        this.radioGroup.registerKeyHandler('backspace', function(e) {
            // The argument "e" contains information on the event
        });
        this.radioGroup.registerKeyHandler('space', function(e) {
            // ...
        });
    }
}

export default App;
See Also