JSFiddle - React, Tailwind, and code Playground

JavaScript

function addLeadingZeros(dateItem){
    if (dateItem.toString().length < 2) { 
       dateItem = '0' + dateItem;
    }
    return dateItem;
}

$(document).ready(function(){
   date = new Date();
   month = addLeadingZeros(date.getMonth()+1);
   day = addLeadingZeros(date.getDay());
   hour = addLeadingZeros(date.getHours());
   minute = addLeadingZeros(date.getMinutes());
   second = addLeadingZeros(date.getSeconds());
   dateFormated = date.getFullYear() + '-' + month + '-' + day + ' ' + hour + ':' + minute + ':' + second;
   
   alert(dateFormated);
});