JSFiddle - React, Tailwind, and code Playground

HTML

<div id="Console"></div>

JavaScript

window.onload = function() {
    var now = new Date();
    var strDateTime = [[AddZero(now.getDate()), AddZero(now.getMonth() + 1), now.getFullYear()].join("/"), [AddZero(now.getHours()), AddZero(now.getMinutes())].join(":"), now.getHours() >= 12 ? "PM" : "AM"].join(" ");
    document.getElementById("Console").innerHTML = "Now: " + strDateTime;
};
    
function AddZero(num) {
    return (num >= 0 && num < 10) ? "0" + num : num + "";
}