Currently this is a link. Users will expect this link to take them to another part of the page or another page altogether.
There is no indication that it opens or closes an associated form on the same page, nor does it indicate the current state of the “reply to” form.
So, instead of a link, use a button. Add to that button an aria-controls attribute that references the id of the associated form’s container, and an aria-expanded attribute that indicates (true or false) the state of the associated form.
The JS logic didn't account for edge cases like scrolling
to the inserted comment, or attaching the comment in the right sorting logic,
on the right pagination page. It also doesn't show any "loading" indication,
so is bad usability for the majority of users. A standard form submission
does the same job better in this case. Note that this doesn't affect
the ability to moderate/delete comments via ajax.
Replaced 'use_ajax_commenting' with 'include_js',
since its important for behaviour other than comment submission itself,
e.g. showing previews (doesn't work without JS)
FIX Also fix up preview to only output the comment content rather than the whole template.
FIX Hide preview after posting comment.
API Move AllowHtml to field to prevent issues with altering Html configuration after comments have been posted.
FIX If moderation is turned on for commenting, still render comments in preview mode.
