JSFiddle - React, Tailwind, and code Playground

HTML

<span name="myControl">I should be Red!</span>
<br />
<br />
<input name="MyControl" id="MyControl" value="I should be Green!" />

CSS

.green {
    background-color: green;
}

.red {
    background-color: red;
}

JavaScript

$('#MyControl').addClass('green');
$('[name="myControl"]').addClass('red');