JSFiddle - React, Tailwind, and code Playground

JavaScript

var pad = function(int) { return int < 10 ? 0 + int : int; };
var timestamp = new Date();

    timestamp.day = [
        pad(timestamp.getDate()),
        pad(timestamp.getMonth() + 1), // getMonth() returns 0 to 11.
        timestamp.getFullYear()
    ];
    
    timestamp.time = [
        pad(timestamp.getHours()),
        pad(timestamp.getMinutes()),
        pad(timestamp.getSeconds())
    ];
    
timestamp.now = parseInt(timestamp.day.join("") + timestamp.time.join(""));
alert(timestamp.now);