JSFiddle - React, Tailwind, and code Playground
HTML
<div class="element">
<img src="old/directory/a.jpg"/>
<img src="old/directory/b.jpg"/>
<img src="old/directory/c.jpg"/>
<img src="old/directory/d.jpg"/>
</div>
JavaScript
jQuery('.element img').each(function () {
jQuery(this).attr('src', jQuery(this).attr('src').replace("old/directory", "new/directory"));
});