JSFiddle - React, Tailwind, and code Playground

HTML

<div id="cartimg_B64MjIwNDV7Mn0yNDd7dHh0XzV9ezIxfTgzNHsxfTQ=" >Tada</div>
<div id="cartimg">Tada2</div>

JavaScript

$('#cartimg_B64MjIwNDV7Mn0yNDd7dHh0XzV9ezIxfTgzNHsxfTQ=').css('backgroundColor','red');
$('#cartimg').css('backgroundColor','red');


var t = document.getElementById('cartimg_B64MjIwNDV7Mn0yNDd7dHh0XzV9ezIxfTgzNHsxfTQ=');

$(t).html('getElementById works');