@speedcubing/cookie/public/js/timeSince.js

Speedcubing Online's UI design.

function timeSince(date) {
	var seconds = Math.floor((new Date() - date) / 1000);
  
	var interval = seconds / 31536000;
	if (interval > 1) {
	  	return Math.floor(interval) + " years";
	}
	interval = seconds / 2592000;
	if (interval > 1) {
	  	return Math.floor(interval) + " months";
	}
	interval = seconds / 86400;
	if (interval > 1) {
	  	return Math.floor(interval) + " days";
	}
	interval = seconds / 3600;
	if (interval > 1) {
	  	return Math.floor(interval) + " hours";
	}
	interval = seconds / 60;
	if (interval > 1) {
	  	return Math.floor(interval) + " minutes";
	}

	return Math.floor(seconds) + " seconds";
  }