JSFiddle - React, Tailwind, and code Playground

JavaScript

Date.prototype.addDays= function(d){
    this.setHours(this.getHours() + d * 24);
    return this;
};

var today = new Date();
$('body').append($('<p />').text(today));

var tomorrow = new Date().addDays(1);
$('body').append($('<p />').text(tomorrow));

var inAYear = new Date().addDays(365);
$('body').append($('<p />').text(inAYear));