JSFiddle - React, Tailwind, and code Playground

HTML

<p>
<label>* Name</label>
</p>
<p>
<label>* Last Name</label>
</p>
<p>
<label>Mascot Name</label>
</p>

CSS

.red {
    color: red;   
}

JavaScript

$("p > label:contains('a')").each(function () {
    $(this).html($(this).html().replace("a", "<span class='red'>*</span>"));
});