JSFiddle - React, Tailwind, and code Playground

HTML

<a href="https://www.google.com/images/srpr/logo4w.png"><img class="alignnone size-medium wp-image-13" alt="Desert" src="https://www.google.com/images/srpr/logo4w.png" width="300" height="225" /></a>

&nbsp;

&nbsp;
<br/>
<a href="http://google.com"><img class="alignnone size-medium wp-image-13" alt="Desert" src="https://www.google.com/images/srpr/logo4w.png" width="300" height="225" /></a>

JavaScript

jQuery(document).ready(function($) {

                                $("a").each(function(i, el) {
                                    var href_value = el.href;
                                    if (/\.(jpg|png|gif)$/.test(href_value)) {
                                        el.href="#";
                                    }
                                });
                            });