JSFiddle - React, Tailwind, and code Playground
by naokiota
HTML
<div>
<img class="minimg" src="http://placehold.it/80x40" />
<img class="minimg" src="http://placehold.it/50x40" />
<img class="minimg" src="http://placehold.it/60x60" />
<img class="minimg" src="http://placehold.it/70x70" />
</div>
JavaScript
$(function(){
var minWidth = Math.min.apply( null,
$('.minimg').map(function(){ return $(this).width(); }).get());
$('.minimg').width(minWidth);
});