JSFiddle - React, Tailwind, and code Playground

HTML

<div id="output"/>

JavaScript

var output = '';
var log = function(a) { output += a + '<br/>'; }; 

log('<b>Using setTime</b>');
var d1 = new Date(2013,2,10,1,0,0,0);
log(d1);
d1.setTime(
  d1.getTime() + 86400000
);
log(d1);

log('<b>Using setDate</b>');
d1 = new Date(2013,2,10,1,0,0,0);
log(d1);
d1.setDate(
  d1.getDate() + 1
);
log(d1);

document.getElementById('output').innerHTML = output;