Scrollable Listbox Example: Ad default value 'None' so first item can be focusable on load

[wagnermaciel]

Fixes #3138

Preview

Preview changes to Scrollable Listbox Example in compare branch

Review checklist

Reviewers: To learn what needs to be covered by each review, Follow the link for the type of review to which you are assigned.

• Editorial review by @mcking65
• Functional review by @mcking65
• Code review by @jongund (
• Test review by @jongund

Not applicable:

• Visual design review by reviewer_id
• Accessibility review by reviewer_id

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WAI Preview Link (Last built on Wed, 06 Nov 2024 01:45:17 GMT).

[css-meeting-bot]

The ARIA Authoring Practices (APG) Task Force just discussed PR 3139 - Scrollable listbox fix.

The full IRC log of that discussion

<Jem> Topic: PR 3139 - Scrollable listbox fix
<Jem> github:https://github.com//pull/3139
<Jem> mck: This is ready to review and added the checklist
<Jem> ..it touches only two files, html and js
<Jem> arie: one testing failed, snapshot issue.
<Jem> jem: assertion error for aria-selected.
<Jem> jon will do code and testing review

[jongund]

Thank you for this update to scrollable listbox.
You need to also update the test case for the additional option:
https://github.com/wagnermaciel/aria-practices/blob/listbox/test/tests/listbox_scrollable.js

With the following change to the const ex:

const ex = {
  ...
  numOptions: 27,  
  firstOptionSelector: '#ex #ss_elem_None',  
};

[jongund]

As long as the recession tests work, I approve the change.
Thank you for the update!

[css-meeting-bot]

The ARIA Authoring Practices (APG) Task Force just discussed PR 3139 - Scrollable listbox fix.

The full IRC log of that discussion

<jugglinmike> Topic: PR 3139 - Scrollable listbox fix
<jugglinmike> github: https://github.com//pull/3139
<jugglinmike> Matt_King: jongund requested a change from the author, and it looks like they made that change
<jugglinmike> Matt_King: And all the tests pass
<jugglinmike> jongund: I have reviewed their work since they made the changes, so it looks good to me, now
<jugglinmike> jongund: I was doing code review and test review
<jugglinmike> Matt_King: I think this is now just waiting on me. I'll review it, and if it's looking good, then it'll get merged!

[mcking65]

@wagnermaciel

Thank you for the fix! We'll get it into the next publication on December 12.