JSFiddle - React, Tailwind, and code Playground

by wesbos

HTML

<a href="#" id="wat">wat!!</a>

CSS

body {
background: grey; }
a {
background: red;
display: block;
color: #fff;
padding:30px;}

JavaScript

function fadeTo(selector,speed,opacity) {
    setInterval(function() {
        selector.style.opacity -= 0.1;
    },1000);   
}

var link = document.getElementById('wat');

fadeTo(link,1,0.1);