JSFiddle - React, Tailwind, and code Playground

JavaScript

var cc = new Date("9/13/2018 12:00 AM");
var c = new Date();

function timeDifference(d, dd) {
    var hour = 60 * 60 * 1000,
        day = hour * 24,
        ms = Math.abs(d - dd);
    
    var days = parseInt(ms / day, 10);
    
        ms -= days * day;
    
    var hours = parseInt(ms / hour, 10);
    
        ms -= hours * hour;
    
    return [
        days + " days",
        hours + " hours"
    ].join(", ");
};


document.body.innerHTML += timeDifference(cc, c) + "<br />";