University of London

First time visit: View without clicking anything

Past events | University of London

News | University of London

Our blogs | University of London

Events | University of London

The Student Insider | University of London

Student blog | University of London

Senior Executive Team | University of London

Mission and Values | University of London

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 2025

May 2025

Title / URL	Issues
University of Londonwww.london.ac.uk/	8
First time visit: View without clicking anythingwww.london.ac.uk/	8
Past events \| University of Londonwww.london.ac.uk/news-events/past-events	7
News \| University of Londonwww.london.ac.uk/news-events/news	7
Our blogs \| University of Londonwww.london.ac.uk/news-events/blogs	7
Events \| University of Londonwww.london.ac.uk/news-events/events	7
The Student Insider \| University of Londonwww.london.ac.uk/news-events/student-insider	7
Student blog \| University of Londonwww.london.ac.uk/news-events/student-blog	7
Senior Executive Team \| University of Londonwww.london.ac.uk/about/senior-executive-team	6
Mission and Values \| University of Londonwww.london.ac.uk/about/strategy/mission-values	6

Fix missing ARIA label IDs

University of London

Where this issue has occurred