Set class on an image based on one clicked?

[jacklawry]

I am looking to set a class on the lightbox image based on the link clicked... I want to have specific styles based on the layout of an image so landscape, portrait or square.

I want to apply a class to the dynamic lightbox sl-wrapper based on the aspect of the image clicked (this is currently both a class and also a data-aspect=“@aspect” that is applied to the tag) I have tried to use the className property but this doesn’t seem to work based on a var set on click of the image (although it will alert/console.log the correct value)…

I then also want this to update based on the image shown.

Any help appreciated!