JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<img src="https://pbs.twimg.com/profile_images/378800000532546226/dbe5f0727b69487016ffd67a6689e75a.jpeg" class="image" alt="cat">

<img src="https://pbs.twimg.com/profile_images/799474059318796288/Xq_cLujQ_reasonably_small.jpg" class="image" alt="">

CSS

.show-res-200px{
  border: 5px solid yellow !important;
}

.show-res-100px{
  border: 5px solid blue !important;
}

JavaScript

$('img').addClass(function() {
        if ( this.height > 200 ) {
            return 'show-res-200px';
        } else {
						return 'show-res-100px';
        }
});