JSFiddle - React, Tailwind, and code Playground

HTML

<a href="http://www.google.com" target="_blank" id="link1">Se clicares aqui nada acontece</a>
<br />
<a href="http://www.google.com" target="_blank">Se clicares vais para o Google</a>

CSS

* {
    margin: 20px 0px;
}
.azul {
    color: blue;
    font-weight: 800;
}

JavaScript

$$('#link1').addEvent('click', link1);

function link1(e) {
    e.preventDefault();
};

$$('button').addEvent('click', bloqueia);