Need code tips to duplicate WIX function for popup window over image in database display page

Thanks Roi. I will begin to learn coding here and try it out. Can you provide tips on how I will capture the image file name from the repeater image element to use to display in the hidden image box? Is the image file name an “event” generated by the mouseover? (ie let clientX = event.clientX; // 362)?
Thanks again for the tips so far, coding is a game to me which I like to play and accomplish a goal.