JSFiddle - React, Tailwind, and code Playground

HTML

<input id="btnupdate" type="button" value="Update" onclick="update()"/>
<img id="loadupdate" src="http://localhost/connectu/styles/images/load_big.gif">

JavaScript

function update(){
    document.getElementById('btnupdate').style.display='none';
document.getElementById('loadupdate').style.display='none';
}