JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#" id="update">Обновить</a>
<div id="content"></div>

JavaScript

function update(){
    document.querySelector('#content').innerHTML = 'Обновлено?';
}

document.addEventListener('DOMContentLoaded', function(){
    document.querySelector('#update').addEventListener('click', update);
});