Testing required radio buttons

This page tests the ability to pre-check and require radio inputs

A required set of radio buttons

Nothing is checked in advance. This will require the user to select an option.

Nothing is required or checked

There's nothing pre-checked and the user doesn't have to modify this set.

One is pre-selected, it's not required

This group has one element pre-selected. But the group is not required.

Selected and required

This group has a pre-selected option and the group is required. The user doesn't have to change anything if they want to accept the default.

Defining a radio group is invalid

Setting aria-invalid on fieldset

VoiceOver and Safari does not announce this. I haven't tested yet in other screen readers

Setting aria-invalid on single radio button

This only announces the invalid state on the first radio button

Setting aria-invalid on each radio button

While requiring additional work, this works.