JSFiddle - React, Tailwind, and code Playground

by yash009

HTML

<a id="categories-toggle" href="#">foo</a>

CSS

a#categories-toggle.down:after{
  content: "\25BC";
}
a#categories-toggle:after{
  content: "\25B2";
}

JavaScript

$("#categories-toggle").on('click', function(eve){
     eve.preventDefault(); 
     $(this).toggleClass("down");
  });