Why not assigned a value in the attribute data-autorNAME?

Trying to adapt this gallery vodkabears.github.io/galereya
Apply it on the page: https://pl-galerie.ru/galerie/
I want to add a new attribute to the picture: data-autorNAME. Value is assigned using PHP. When you view the page's source code shows that the attribute value is not empty.
Tests have shown that the area code
and on the site
in autorNAME is assigned an empty string. What could be wrong?
The previous attributes data-detail data-autorURL handled correctly
June 8th 19 at 16:49
2 answers
June 8th 19 at 16:51
Alternatively, replace autorNAME:b.getAttribute("autorNAME")||"" on autorNAME:b.getAttribute("data-autorNAME")||""
Sure)) thank you - cheyanne57 commented on June 8th 19 at 16:54
This answer is incorrect - sally_Carro commented on June 8th 19 at 16:57
are , well, true, but not for Feng Shui =) - Lulu_Zulauf71 commented on June 8th 19 at 17:00
isspecification how to call date attributes because I for Shui Shui - sally_Carro commented on June 8th 19 at 17:03
June 8th 19 at 16:53
First, to use need lower case
Secondly, you need to get from the dataset

<div id="b" data-author-name="ivan">

var name = b.dataset.authorName;
This answer is correct - cheyanne57 commented on June 8th 19 at 16:56

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