JSFiddle - React, Tailwind, and code Playground

JavaScript

var d = new Date();
var dd = d.getDate();
var mm = d.getMonth()+1; //January is 0!
var yy = d.getFullYear();

var weekday=new Array(7);
weekday[0]="Sunday";
weekday[1]="Monday";
weekday[2]="Tuesday";
weekday[3]="Wednesday";
weekday[4]="Thursday";
weekday[5]="Friday";
weekday[6]="Saturday";

var day=weekday[d.getDay()];

var h = d.getHours();
    var m = d.getMinutes();

alert(yy+"-"+mm+"-"+dd+" "+day+" "+h+":"+m)