[wp-trac] [WordPress Trac] #46588: comment-reply JavaScript not working with comments loaded via Ajax

WordPress Trac noreply at wordpress.org
Mon Apr 15 20:53:50 UTC 2019

#46588: comment-reply JavaScript not working with comments loaded via Ajax
 Reporter:  dcooney       |       Owner:  peterwilsoncc
     Type:  defect (bug)  |      Status:  accepted
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Comments      |     Version:  5.1
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:  javascript

Comment (by dcooney):

 Hi @peterwilsoncc,
 The issue appears for me on the front end. I have not tested in the admin.

 Here is what I have determined to be the issue(s).

 `get_comment_reply_link` uses `add_query_arg` to get the URL for the
 comment reply, by default `add_query_args` uses `$_SERVER['REQUEST_URI']`
 as the base URL. The issue here is when using admin-ajax or the REST API
 `$_SERVER['REQUEST_URI']` is the endpoint URL not the base URL of the

 You can pass in HTTP_REFERRER which fixes the error in the URL.

                 'replytocom'      => $comment->comment_ID,
                 'unapproved'      => false,
                 'moderation-hash' => false,
         ), $_SERVER["HTTP_REFERER"]



 **"The comment-reply JavaScript uses a mutation observer for adding events
 for AJAX added comments, are you experiencing the problem in all

 Yes, in all browser. The MutationObserver `observeChanges` method never
 fires. It does trigger on page load, but even appending `<li>` elements in
 plain JS (not via Ajax) after page load does not trigger the event.
 Unfortunately, I don't how the MutationObserver is suppose to function so
 do not have a fix for this.

Ticket URL: <https://core.trac.wordpress.org/ticket/46588#comment:4>
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