JSFiddle - React, Tailwind, and code Playground

HTML

<div id="myid">кликнуть</div>

CSS

#myid.myclass:before{
    content:"Я здесь";
    
}
#myid:before{
    content:"Я тут";
}

JavaScript

$('#myid').click(function(){$(this).toggleClass('myclass')})