JSFiddle - React, Tailwind, and code Playground

HTML

<div id="clickme"> Click me </div>

CSS

div{ background:#00CC00; display:inline-block; margin:20px; border-radius:5px; padding:20px;cursor:pointer;}

JavaScript

$('#clickme').click(function(){
    var color = $(this).css('backgroundColor');
    //alert("'"+color+"'");
    if(color == "rgb(0, 204, 0)"){
        alert("true");
        $(this).css('backgroundColor', '#CC0000');
    }else{
        alert("false");
        $(this).css('backgroundColor', '#00CC00');
    }
});