JSFiddle - React, Tailwind, and code Playground

HTML

<div class="guy foo">foo</div>
<div class="guy bar">bar</div>

CSS

.red { color: red }
.green { color: green }

JavaScript

$(".foo").bind("changeColor", function(){
    $(this).addClass("red");
});

$(".bar").bind("changeColor", function(){
    $(this).addClass("green");
});

$(".guy").trigger("changeColor");