Blazor DatePicker Accessibility
Out of the box, the Telerik UI for Blazor DatePicker provides extensive accessibility support and enables users with disabilities to acquire complete control over its features.
The DatePicker is compliant with the Web Content Accessibility Guidelines (WCAG) 2.2 AA standards and Section 508 requirements, follows the Web Accessibility Initiative - Accessible Rich Internet Applications (WAI-ARIA) best practices for implementing the keyboard navigation for its component role, provides options for managing its focus and is tested against the most popular screen readers.
WAI-ARIA
This section lists the selectors, attributes, and behavior patterns supported by the component and its composite elements, if any.
DatePicker Wrapping Element
| Selector | Attribute | Usage |
|---|---|---|
.k-input-inner |
role=combobox |
The input element should follow the combobox specification. |
label for or aria-label or aria-labelledby
|
The input needs an accessible name to be assigned to it. | |
aria-required=true |
The attribute is rendered only when the DatePicker is in a form HTML element and announces the required state of the component. |
|
aria-haspopup=grid |
Indicates the component has a Calendar Popup that implements role="grid". |
|
aria-expanded=true/false |
Announces whether the Popup is visible or not. | |
aria-controls=.k-animation-container id |
Points to the popup element. Signifies that the combobox element controls the Calendar grid. |
|
aria-activedescendant=.k-calendar-td.k-focus id |
Points to the focused item (date/month/year) in the Calendar Popup. Should only be present when the Popup is open. | |
aria-describedby=.k-form-hint id/.k-form-error id |
Points to the hint for the input, or if the input is invalid, to the error message. This attribute should only be present when a hint is set or when the input is invalid. | |
readonly=readonly or aria-readonly=true
|
The attribute is rendered only when the DatePicker is readonly. | |
aria-invalid=true |
The attribute is rendered only when the DatePicker is in a form HTML element and announces the valid state of the component. |
|
tabindex=0 |
The element must be focusable. | |
.k-disabled .k-input-inner |
disabled=disabled or aria-disabled=true
|
The attribute is rendered only when the DatePicker is disabled. |
.k-input-button |
role=button or nodeName=button
|
The element should either be a <button> element or should have role="button" assigned. |
aria-label |
The button needs an accessible name to be assigned to it. | |
tabindex=-1 |
The button element should not be focusable. |
Calendar Popup
The Calendar in the Popup element of the component should implement the specification for the Calendar component.
Calendar accessibility specification
Resources
WAI ARIA specification for combobox
ARIA practices Date Picker Dialog Example
Section 508
The DatePicker is fully compliant with the Section 508 requirements.
Testing
The DatePicker has been extensively tested automatically with axe-core and manually with the most popular screen readers.
To report any accessibility issues, contact the team through the Telerik Support System.
Screen Readers
The DatePicker has been tested with the following screen readers and browsers combinations:
| Environment | Tool |
|---|---|
| Firefox | NVDA |
| Chrome | JAWS |
| Microsoft Edge | JAWS |