Different comment-icon in the trigger when image has comments

Hello,

I want to have a different comment icon in the triger bar (grid/thumbnail view) for the images that have comments. It should be only an additional html class that will change the current icon.

How can I check if that image has comments, so that I can make the change at the page load? I’ve seen that the post itself loads only after the thumbnail is clicked, and only then I can check if it has comments.

Thank you.
Tibi

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