Nodejs Date Ago Format ago()

Method Source Code

/**//ww  w  .  ja v  a  2  s .  c  o  m
 * Provides a Twittereque "ago" time.
 */
Date.prototype.ago = function () {
   var now = new Date();
   var seconds_ago = (now.getTime() - this.getTime()) / 1000;
   var time = Math.floor(seconds_ago / 86400);
   var s = (time == 1) ? "" : "s";

   if (seconds_ago < 60) {
      return "less than a minute ago";
   } else if (seconds_ago < 3600) {
      time = Math.round(seconds_ago / 60);
      s = (time == 1) ? "" : "s";
      return time.toString() + " minute" + s + " ago";
   } else if (seconds_ago < 86400) {
      time = Math.floor(seconds_ago / 3600);
      s = (time == 1) ? "" : "s";
      if (time == 1) time = "an";
      return "over " + time.toString() + " hour" + s + " ago";
   }
};

Related

1. ago()

   Number.prototype.ago = function() {
     var d = new Date();
     return (d.getTime() - this); 
   };
   

2. ago()

   Number.prototype.ago = function () {
     var i = this.valueOf();
     var t = new Date().getTime();
     return new Date(t - i);
   };
   

3. ago()

   Date.prototype.ago = function() {
     var diff = (((new Date()).getTime() - this.getTime()) / 1000)
     , day_diff = Math.floor(diff / 86400);
     return day_diff == 0 && (
       diff < 60 && "just now" ||
       diff < 120 && "1 minute ago" ||
       diff < 3600 && Math.floor( diff/60 ) + " minutes ago" ||
       diff < 7200 && "1 hour ago" ||
       diff < 86400 && Math.floor( diff/3600 ) + " hours ago") ||
   ...
   

4. Ago()

   Date.prototype.Ago = function ()
     var msPerMinute = 60 * 1000;
     var msPerHour = msPerMinute * 60;
     var msPerDay = msPerHour * 24;
     var msPerMonth = msPerDay * 30;
     var msPerYear = msPerDay * 365;
     var elapsed = new Date() - this;
     if (elapsed < msPerMinute)
   ...