JSFiddle - React, Tailwind, and code Playground

JavaScript

var today = "27/11/2013"
today = new Date(today.split('/')[2],today.split('/')[1]-1,today.split('/')[0]);
var date2 = "23/02/2011"
date2 = new Date(date2.split('/')[2],date2.split('/')[1]-1,date2.split('/')[0]);
var timeDiff = Math.abs(today.getTime() - date2.getTime());
var diffDays = Math.ceil(timeDiff / (1000 * 3600 * 24)); 
alert(diffDays);