Vue Lookup - Accessibility

Accessibility Features Overview

NOTE
The overall accessibility level of your application depends on the Lookup features that 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 Lookup 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)
Lookup does not support Windows High Contrast themes.

Keyboard Navigation

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

Key Action
Alt + ↓ Opens the drop-down menu.
Enter or Space If the drop-down menu is closed, opens it; otherwise selects the current item.
Esc Closes the drop-down menu.
↑ / ↓ If the drop-down menu is opened, moves focus to the previous/next item.
Tab / Shift + Tab If the drop-down menu is opened, moves focus to the list / search field.
Page Up / Page Down Moves focus to the first/last menu item on the page.
Home / End Moves focus to the first/last menu item.

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

  • <template>
  • <DxLookup :ref="myLookupRef" />
  • </template>
  • <script>
  • import 'devextreme/dist/css/dx.light.css';
  •  
  • import DxLookup from 'devextreme-vue/lookup';
  •  
  • const myLookupRef = 'my-lookup';
  •  
  • export default {
  • components: {
  • DxLookup
  • },
  • data() {
  • return {
  • myLookupRef
  • }
  • },
  • computed: {
  • lookup: function() {
  • return this.$refs[myLookupRef].instance;
  • }
  • },
  • mounted: function() {
  • this.lookup.registerKeyHandler('backspace', function(e) {
  • // The argument "e" contains information on the event
  • });
  • this.lookup.registerKeyHandler('space', function(e) {
  • // ...
  • });
  • }
  • }
  • </script>

Screen Reader Support

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

To improve accessibility, use the inputAttr property to specify aria-label for the component. You do not need to specify aria-label if you use label.