Redmine

I wrote a patch to implement this feature.
Please see the attached gif animation: click_the_link.gif

I am sure this feature can improve UX. Discourse (open source discussion board software) has similar feature. You can try highlight feature of Discourse by clicking https://meta.discourse.org/t/educate-users-about-paragraphs/65220/9 .

The patch from Mizuki Ishikawa looks good to me but I think it is safer to change the patch as follows:

--- highlight_the_linked_note.patch.org    2017-06-28 13:44:46.000000000 +0900
+++ highlight_the_linked_note.patch    2017-06-28 13:45:00.000000000 +0900
@@ -12,7 +12,7 @@
 +  $(window).on('load hashchange',function(){
 +    var hash = location.hash;
 +    if (hash){
-+      $('div' + hash).css('background-color', '#ffffdd').animate({backgroundColor: ''}, 2000);
++      $('#history div' + hash).css('background-color', '#ffffdd').animate({backgroundColor: ''}, 2000);
 +    }
 +  });
 +});

I slightly changed the patch. The new patch checks if the format of the fragment identifier is "#change-nnn" or "#note-nnn".

Updated my patch. Replaced a color value with a CSS class in the view.

Committed, thanks. I've made the transition a bit longer and changed the color.