Undisrupted | National Arts Centre

NAC 2023-2024 Season | National Arts Centre

NAC Dance | National Arts Centre

NAC Orchestra | National Arts Centre

March 2024 | National Arts Centre (Ottawa)

Kipnes Lantern | National Arts Centre

Summer programming | National Arts Centre

Video on-demand | National Arts Centre

NAC Popular Music and Variety | National Arts Centre

Meetings and Events | National Arts Centre (Ottawa)

When specifying accessible names via `aria-labelledby`, ensure that the 
label elements exist.

## Explanation

Accessible names are required for many parts of a page, including form controls.
One way to accomplish this is to use `aria-labelledby` to specify the ID or IDs of 
other elements which contain a label. For example:

```html
<h2 id="dialog-labell">Important message!</h2>
<dialog aria-labelledby="dialog-label">
```

In this example, the `aria-labelledby` for the `<dialog>` points to an ID of `dialog-label`,
which doesn't exist. The heading it refers to instead has an ID of `dialog-labell`, presumably 
a typo.

## Why this matters

It isn't usually clear when an accessible name is broken, even during user testing.

This check helps to identify where an element clearly intended to have a label, but
that label is missing.

When a label is broken, it may be impossible for a user of assistive technologies
to understand what that element does.

missing-aria-labelled-by

June 2024

May 2024

National Arts Centre

Title / URL	Issues
Undisrupted \| National Arts Centrenac-cna.ca/en/undisrupted	12
NAC 2023-2024 Season \| National Arts Centrenac-cna.ca/en/season	7
NAC Dance \| National Arts Centrenac-cna.ca/en/dance	3
NAC Orchestra \| National Arts Centrenac-cna.ca/en/orchestra	2
March 2024 \| National Arts Centre (Ottawa)nac-cna.ca/en/calendar/list/2024/03	1
Kipnes Lantern \| National Arts Centrenac-cna.ca/en/lantern	1
Summer programming \| National Arts Centrenac-cna.ca/en/summer	1
Video on-demand \| National Arts Centrenac-cna.ca/en/video	1
NAC Popular Music and Variety \| National Arts Centrenac-cna.ca/en/popularmusic	1
Meetings and Events \| National Arts Centre (Ottawa)nac-cna.ca/en/meetings	1

Fix missing ARIA label IDs

National Arts Centre

Where this issue has occurred