Accessibility in Blazor DatePicker Component

2 May 20256 minutes to read

The web accessibility defines a way to make web content and web applications more accessible to disabled people. It especially helps the dynamic content change and advanced user interface components developed with Ajax, HTML, JavaScript, and related technologies.

The Blazor DatePicker component followed the accessibility guidelines and standards, including ADA, Section 508, WCAG 2.2 standards, and WCAG roles that are commonly used to evaluate accessibility.

The accessibility compliance for the Blazor DatePicker component is outlined below.

Accessibility Criteria Compatibility
WCAG 2.2 Support Intermediate
Section 508 Support Intermediate
Screen Reader Support Yes
Right-To-Left Support Yes
Color Contrast Yes
Mobile Device Support Yes
Keyboard Navigation Support Yes
Axe-core Accessibility Validation Yes
Yes - All features of the component meet the requirement.
Intermediate - Some features of the component do not meet the requirement.
No - The component does not meet the requirement.

WAI-ARIA attributes

The Blazor DatePicker provides built-in compliance with the WAI-ARIA specifications. WAI-ARIA supports can be achieved through the attributes like aria-expanded, aria-disabled, and aria-activedescendant applied to the input element.

To learn more about the accessibility of Calendar, refer to the Calendar’s Accessibility section.

It provides information about the widget for assistive technology to the disabled person in screen reader.

  • aria-expanded: Attribute indicates the state of a collapsible element.

  • aria-disabled: Attribute indicates the disabled state of this DatePicker component.

  • aria-activedescendent: Attribute helps in managing the current active child of the DatePicker component.

Keyboard interaction

You can use the following keys to interact with the Blazor DatePicker. The component implements the keyboard navigation support by following the WAI-ARIA practices.

It supports the following list of shortcut keys:

Input navigation

Before opening the pop-up, use the following list of keys to control the pop-up element:

Windows Mac Description
Alt + ↓ ⌥ + ↓ Opens the popup.
Alt + ↑ ⌥ + ↑ Closes the popup.
Esc Esc Closes the popup.

Calendar navigation

Use the following list of keys to navigate the Calendar after the pop-up has been opened:

Windows Mac Description
↑ ↑ Focuses the previous week date.
↓ ↓ Focuses the next week date.
← ← Focuses the previous date.
→ → Focuses the next date.
Home Home Focuses the first date in the month.
End End Focuses the last date in the month.
Page Up Page Up Focuses the same date in the previous month.
Page Down Page Down Focuses the same date in the next month.
Enter Enter Selects the currently focused date.
Shift + Page Up ⇧ + Page Up Focuses the same date in the previous year.
Shift + Page Down ⇧ + Page Down Focuses the same date in the previous year.
Ctrl + ↑ ⌘ + ↑ Moves into the inner level of view like month-year and year-decade
Ctrl + ↓ ⌘ + ↓ Moves out from the depth level view like decade-year and year-month
Control + Home ⌘ Focuses the starting date in the current year.
Ctrl + End ⌘ + End Focuses the ending date in the current year.

NOTE

To focus out the DatePicker component, use the t keys. For additional information about native event, click here.

@using Syncfusion.Blazor.Calendars

<SfDatePicker TValue="DateTime?" @onkeypress="@(e => KeyPressed(e))" @ref="DateObj"></SfDatePicker>

@code {
    public SfDatePicker<DateTime?> DateObj;
    public void KeyPressed(KeyboardEventArgs args)
    {
        if (args.Key == "t")
        {
            this.DateObj.FocusOutAsync();
        }
    }
}

Ensuring accessibility

The Blazor DatePicker component’s accessibility levels are ensured through an axe-core software tool during automated testing.

The accessibility compliance of the DatePicker component is shown in the following sample. Open the sample in a new window to evaluate the accessibility of the DatePicker component with accessibility tools.

See also