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Blazor Calendar Accessibility

The Telerik UI for Blazor Calendar is WCAG 2.1 AAA 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

Calendar Element

The Calendar should follow the requirements for the grid role (https://www.w3.org/TR/wai-aria-1.2/#grid). It is a single-tab-stop component. All the button actions available for mouse users are also available via keyboard shortcuts.

Selector Attribute Usage
.k-calendar-table role=grid Specifies the role of the Calendar dates table.
aria-labelledby=.k-nav-fast id Pointing to the current view label (e.g. March 2022 or 2020-2029).
aria-activedescendant=.k-calendar-td.k-selected id Pointing to the currently active (focused) date/month/year/decade in the table.
tabindex=0 Makes the grid focusable.
.k-calendar-thead role=rowgroup There must be <thead> element or an element with role="rowgroup". That group of rows must contain the header row of cells.
.k-calendar-tbody role=rowgroup There must be <tbody> element or an element with role="rowgroup". That group of rows must contain the rows with date/month/tear/decade cells.
.k-calendar-tr role=row The thead and the tbody elements must contain <tr> elements or elements with role="row".
.k-content:nth-child(1) .k-calendar-th scope=col Specifies that the header is applied to a column.
aria-label Specifies the full name of the day of the week (the column header).
role=columnheader or nodeName=th The row in the <thead> must contain <th> elements or elements with role="columnheader".
.k-calendar-td role=gridcell The rows in the <tbody> must contain <td> elements or elements with role="gridcell".
.k-calendar-td.k-selected aria-selected=true Specifies whether the date is selected or not.
.k-calendar-td.k-disabled aria-disabled=true When a date is not available for selection, its gridcell element must have the attribute set to true.
.k-year .k-calendar-td aria-label Applicable in year view - for better context contains the full name of the month. May also be applied in month view to specify the full text for a date.
Selector Attribute Usage
.k-nav-next,.k-nav-prev role=button or nodeName=button Previous / Next buttons must either be <button> elements or have the appropriate role.
aria-label or title Previous and Next buttons must have descriptive text set as they contain only an icon (no text).
tabindex=-1 The buttons must be focusable.
.k-nav-next.k-disabled,.k-nav-prev.k-disabled aria-disabled=true When navigation is not allowed outside the current month/year/decade the Previous and Next buttons should have this attribute set to true.
.k-nav-fast role=button or nodeName=button Go to parent view button must either be a <button> element or must have the appropriate role.
aria-label or title Go to parent view button must have descriptive text set explaining its purpose.
tabindex=-1 The buttons must be focusable.
.k-nav-fast.k-disabled aria-disabled When navigation is not allowed outside the current view the button should have this attribute set to true.
.k-nav-today role=link or nodeName=a Today link must either be <a> element or must have the appropriate role.
tabindex=-1 The link must be focusable.

Resources

ARIA practices Date Picker Dialog Example

Section 508

The Calendar 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

See Also

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