var isOlder = require('is-older');
 
var one = document.getElementById('one');
var two = document.getElementById('two');
var three = document.getElementById('three');
 
console.log(isOlder(two, one));   // returns 1
console.log(isOlder(one, two));   // returns -1
console.log(isOlder(one, three)); // returns 0

var els = document.querySelector('*');
 
console.log(els.sort(isOlder)).reverse();
// `els` is sorted from oldest to youngest
 
console.log(els.sort(isOlder));
// `els` is sorted from youngest to oldest