JSFiddle - React, Tailwind, and code Playground

HTML

<ul id="something">
  <li>
    <a href="">
        <img src="http://dummyimage.com/128x79/000/fff" />
    </a>
  </li>
  <li>
    <a href="">
        <img src="http://dummyimage.com/128x79/ccc/fff" />
    </a>
  </li>
</ul>

JavaScript

$('img').hover(function(){
    this.src = this.src.replace("128x79", "200x60");         
});