JSFiddle - React, Tailwind, and code Playground

HTML

<div class="counter fl" id="add_counter" >a</div>

CSS

.counter{
   span{display: none;}
   &:before{
   content: "Bookmark";
}
}
.counter.bookmarked{
    content: "Bookmarked";
}
    
}

JavaScript

$('.counter').addClass('bookmarked');