JSFiddle - React, Tailwind, and code Playground
by j08691
HTML
<ul class="gallery">
<li><a href="#"><img src="http://www.placekitten.com/2500/2150" /></a>
</li>
<li><a href="#"><img src="http://www.placekitten.com/1300/1150" /></a>
</li>
</ul>
JavaScript
$(".gallery").find("li a").each(function () {
console.log($(this).find("img").width() + 'x' + $(this).find("img").height());
});