Contact Bangor University | Bangor University

Why Bangor? | Bangor University

Ymchwil yn ein Ysgolion Academaidd | Bangor University

Information for Parents and Guardians | Bangor University

Gwneud Cais am Gwrs | Bangor University

Research in our Academic Schools | Bangor University

BangorTV | Bangor University

Cyllid Myfyrwyr | Bangor University

Teaching, Learning & Widening Access | Bangor University

Ehangu Mynediad, Prifysgol Bangor

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

December 2024

November 2024

Bangor University

Title / URL	Issues
Contact Bangor University \| Bangor Universitywww.bangor.ac.uk/about/contacts	1
Why Bangor? \| Bangor Universitywww.bangor.ac.uk/international/about	1
Ymchwil yn ein Ysgolion Academaidd \| Bangor Universitywww.bangor.ac.uk/cy/ymchwil/ysgolion	1
Information for Parents and Guardians \| Bangor Universitywww.bangor.ac.uk/study/parents	1
Gwneud Cais am Gwrs \| Bangor Universitywww.bangor.ac.uk/cy/astudio/gwneudcais	1
Research in our Academic Schools \| Bangor Universitywww.bangor.ac.uk/research/schools	1
BangorTV \| Bangor Universitywww.bangor.ac.uk/cy/bangortv	1
Cyllid Myfyrwyr \| Bangor Universitywww.bangor.ac.uk/cy/cyllidmyfyrwyr	1
Teaching, Learning & Widening Access \| Bangor Universitywww.bangor.ac.uk/about/teaching	1
Ehangu Mynediad, Prifysgol Bangorwww.bangor.ac.uk/cy/ehangu-mynediad	1

Fix missing ARIA label IDs

Bangor University

Where this issue has occurred