Stories Library | Regeneron

Perspectives on Ophthalmology Innovation | Regeneron Stories

Error 404: Page Not Found | Regeneron Corporate

About Regeneron | Our Company

Privacy Notice | Regeneron

Regeneron Genetics Center® (RGC™) | Genetics to Therapeutics

Terms of Use | Regeneron

Regeneron | Pushing the Bounds of Science

Regeneron Collaborations | Business Development Partnerships

Regeneron’s COVID-19 Response Efforts

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

August 2025

July 2025

Regeneron Pharmaceuticals

Title / URL	Issues
Stories Library \| Regeneronwww.regeneron.com/stories/library	3
Perspectives on Ophthalmology Innovation \| Regeneron Storieswww.regeneron.com/stories/eye-on-the-experts	3
Error 404: Page Not Found \| Regeneron Corporatewww.regeneron.com/Error/StatusCodeError/404	3
About Regeneron \| Our Companywww.regeneron.com/about/our-company	3
Privacy Notice \| Regeneronwww.regeneron.com/privacy-notice	3
Regeneron Genetics Center® (RGC™) \| Genetics to Therapeuticswww.regeneron.com/science/genetics-center	3
Terms of Use \| Regeneronwww.regeneron.com/terms	3
Regeneron \| Pushing the Bounds of Sciencewww.regeneron.com/	3
Regeneron Collaborations \| Business Development Partnershipswww.regeneron.com/about/collaborations	3
Regeneron’s COVID-19 Response Effortswww.regeneron.com/covid19	3

Fix missing ARIA label IDs

Regeneron Pharmaceuticals

Where this issue has occurred