Time ago - Returns a string with a string containing an approximation time since the date. ie: "5 minutes", "2 days", "10 years"

date.time_ago.js

Date.prototype.timeAgo = function(){
  var seconds = Math.floor((new Date() - this) / 1000);
  
  var interval = Math.floor(seconds / 31536000);
  if (interval > 1) {return interval + " years";}
  if (interval === 1) {return interval + " year";}
  
  interval = Math.floor(seconds / 2592000);
  if (interval > 1) { return interval + " months";}
  if (interval === 1) {return interval + " month";}
  
  interval = Math.floor(seconds / 86400);
  if (interval > 1) {return interval + " days";}
  if (interval === 1) {return interval + " day";}
  
  interval = Math.floor(seconds / 3600);
  if (interval > 1) {return interval + " hours";}
  if (interval === 1) {return interval + " hour";}
  
  interval = Math.floor(seconds / 60);
  if (interval > 1) {return interval + " minutes";}
  if (interval === 1) {return interval + " minute";}
  
  return Math.floor(seconds) + " seconds";
};