Sport - Trinity Sport | Trinity College Dublin

Innovation - Trinity Innovation | Trinity College Dublin

Events Listing - News & Events | Trinity College Dublin

Trinity Research - Trinity College Dublin

Sustainability - Trinity Sustainability | Trinity College Dublin

AZ - | Trinity College Dublin

404 - | Trinity College Dublin

Courses - Courses | Trinity College Dublin

Disclaim - | Trinity College Dublin

News & Events - Trinity Development & Alumni - Trinity College Dublin

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

February 2026

January 2026

Trinity College Dublin

Title / URL	Issues
Sport - Trinity Sport \| Trinity College Dublinwww.tcd.ie/sport/	3
Innovation - Trinity Innovation \| Trinity College Dublinwww.tcd.ie/innovation/	3
Events Listing - News & Events \| Trinity College Dublinwww.tcd.ie/news_events/events/	3
Trinity Research - Trinity College Dublinwww.tcd.ie/research/	3
Sustainability - Trinity Sustainability \| Trinity College Dublinwww.tcd.ie/sustainability/	3
AZ - \| Trinity College Dublinwww.tcd.ie/az/	3
404 - \| Trinity College Dublinwww.tcd.ie/invented-url-for-404-page/	3
Courses - Courses \| Trinity College Dublinwww.tcd.ie/courses/	3
Disclaim - \| Trinity College Dublinwww.tcd.ie/disclaim/	3
News & Events - Trinity Development & Alumni - Trinity College Dublinwww.tcd.ie/alumni/news-events/	3

Fix missing ARIA label IDs

Trinity College Dublin

Where this issue has occurred