JSFiddle - React, Tailwind, and code Playground

HTML

<a id="editPhoto" class="btn btn-primary btn-sm" onclick="gen_all_es(event)" style="width:100%; margin-bottom:5px;" href="jcorp.aspx?paramControl=imagePhoto&responsePage=DesignCenter_Static.aspx&templateName=5">Add / Modify Photo</a>

JavaScript

function gen_all_es(e) {
    e.preventDefault();
    // your code
}