JavaScript/jQuery List - Accessibility

Accessibility Features Overview

NOTE
The overall accessibility level of your application depends on the List features you use.
Accessibility Requirement Support Level
Right-to-Left Support
Keyboard Navigation Support
Screen Reader Support
Contrast Color Theme
Mobile Device Support
Lighthouse Accessibility Validation
Axe Accessibility Validation
WAVE Accessibility Validation
Section 508 Support
WCAG 2.x Support
  • - All component features meet the requirement
  • - Some component features may not meet the requirement
  • - Accessibility requirement is not supported

Accessibility Standards Compliance

The List component meets a variety of Section 508 and WCAG 2.x compliance standards. Known exceptions:

Section 508 criteria WCAG 2.x criteria Exception description
501 (Web)(Software)
504.2 (Authoring Tool)
602.3 (Support Docs)		 1.4.3 Contrast (Minimum) (Level AA)
1.4.11 Non-text Contrast (Level AA 2.1 and 2.2)		 List does not support Windows High Contrast themes.
501 (Web)(Software)
504.2 (Authoring Tool)
602.3 (Support Docs)		 2.1.1 Keyboard (Level A) List does not collapse groups.
- 2.5.7 Dragging Movements (Level AA 2.2 only) If itemDragging is enabled, the List component does not meet this criterion.
501 (Web)(Software)
504.2 (Authoring Tool)
602.3 (Support Docs)		 4.1.2 Name, Role, Value (Level A) List does not pronounce groups in the grouped list mode.
502.3.10 List of Actions
11.5.2.11 List of available actions		 - List does not supply information about the reorder and remove operations.

Keyboard Navigation

A user can use the following keys to interact with the List component:

Key Action
↑ / ↓ Moves focus to the previous/next item.
Page Up / Page Down Moves focus to the item located a screen above/below the current one.
Home / End Moves focus to the first/last item.
Enter or Space Selects the focused item.
Shift + ↑ / ↓ Shifts the focused item one item up/down. Active if the allowItemReordering property is set to true.
Delete Removes the focused item. Active if the allowItemDeleting property is set to true.

Use the registerKeyHandler(key, handler) method to implement a custom handler for a key.

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

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

import DxList from 'devextreme-vue/list';

const myListRef = 'my-list';

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

import { List } from 'devextreme-react/list';

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

        this.listRef = React.createRef();
    }

    render() {
        return (
            <List ref={this.listRef} />
        );
    }

    get list() {
        return this.listRef.current.instance();
    }

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

export default App;

Screen Reader Support

The List component supports screen readers and complies to WAI-ARIA standards.