JSFiddle - React, Tailwind, and code Playground

by brineryte

HTML

Day index is: 
<p id="p">

</p>

JavaScript

let theDate = Date.now();
let daysAdded = addDays(theDate, -1);

document.getElementById("p").innerHTML = daysAdded;

function addDays(date, days) {
            var result = new Date(date);
            result.setDate(result.getDate() + days);
            return result;
        }