JSFiddle - React, Tailwind, and code Playground

HTML

<span class="foo"></span>

JavaScript

function timeClock() {
    setTimeout(timeClock, 1000);
    now = new Date();
    console.log(now);
    f_date = now.getDate();
    f_date +=" "+now.getMonth();
    f_date +=" "+now.getFullYear();
    f_date +=" / "+now.getHours()+':'+now.getMinutes()+':'+now.getSeconds();
    $('.foo').html('Date: '+f_date);
    return f_date;
}
$(function(){
    $('.foo').html(timeClock());
});