Blazor DateTimePicker Accessibility
The Telerik UI for Blazor DateTimePicker component is WCAG 2.1 AA and Section 508 compliant. The component also follows the WAI-ARIA best practices for implementing the keyboard navigation for its component role, and is tested against the popular screen readers.
Wai-Aria
Input 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-haspopup=grid |
Indicates the component has a Dialog Popup. | |
aria-expanded=true/false |
Announces whether the Popup is visible or not. | |
aria-controls=.k-calendar-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/hour/minute) in the Calendar Popup or the Time Popup. Should only be present when the Popup is open. | |
readonly=readonly or aria-readonly=true
|
Attribute is rendered only when the DateTimePicker is readonly. | |
aria-invalid=true |
Attribute is rendered only when the combobox is in form and announces the valid state of the component. | |
tabindex=0 |
The element should be focusable. | |
.k-disabled .k-input-inner |
disabled=disabled or aria-disabled=true
|
Attribute is rendered only when the DateTimePicker 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 |
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
Popup Date/Time View Chooser
The Date/Time view chooser in the Popup element of the component should implement the specification for the ButtonGroup component.
ButtonGroup accessibility specification
TimePicker Popup
Time Popup implementation should follow the specification for the TimePicker component.
TimePicker accessibility specification
Resources
WAI ARIA specification for combobox
WAI ARIA specification for spinbutton
ARIA practices Date Picker Dialog Example
Section 508
The DateTimePicker is compliant with the Section 508 requirements
Testing
The component has been extensively tested automatically with static code analyzers and manually with the most popular screen readers.
Any Accessibility Issues could be reported in Telerik Support System.
Screen Readers
Environment | Tool |
---|---|
Firefox | NVDA |
Chrome | JAWS |
Microsoft Edge | JAWS |