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.
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If you have technical questions, please create a support ticket in the DevExpress Support Center.
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