Curiosity on Stage | Canada Science and Technology Museum

Home | Canada Science and Technology Museum

Events Calendar | Canada Science and Technology Museum

About | Canada Science and Technology Museum

Winter Wonders | Canada Science and Technology Museum

Electri-city | Canada Science and Technology Museum

Canada Science and Technology Museum - Terms of Use | Canada Science and Technology Museum

Try This Out | Canada Science and Technology Museum

Climate Science | Canada Science and Technology Museum

Page not found | Ingenium

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

March 2025

February 2025

Canada Science and Technology Museum

Title / URL	Issues
Curiosity on Stage \| Canada Science and Technology Museumingeniumcanada.org/scitech/curiosity-on-stage	3
Home \| Canada Science and Technology Museumingeniumcanada.org/scitech	2
Events Calendar \| Canada Science and Technology Museumingeniumcanada.org/scitech/events/calendar	2
About \| Canada Science and Technology Museumingeniumcanada.org/scitech/about	2
Winter Wonders \| Canada Science and Technology Museumingeniumcanada.org/scitech/events/winter-wonders	2
Electri-city \| Canada Science and Technology Museumingeniumcanada.org/scitech/education/electri-city	2
Canada Science and Technology Museum - Terms of Use \| Canada Science and Technology Museumingeniumcanada.org/scitech/terms-of-use	2
Try This Out \| Canada Science and Technology Museumingeniumcanada.org/scitech/education/try-this-out	2
Climate Science \| Canada Science and Technology Museumingeniumcanada.org/scitech/climate-science	2
Page not found \| Ingeniumingeniumcanada.org/invented-url-for-404-page	2

Fix missing ARIA label IDs

Canada Science and Technology Museum

Where this issue has occurred