Nodejs Time Calculate timeAgo(date)

Method Source Code

String.prototype.format = function(obj) {
  var args = arguments;
  var str = this;
  // Support either an object, or a series.
  return str.replace(/\{[\w\d_-]+\}/g, function(part) {
    // Strip off {}.
    part = part.slice(1, -1);/*from ww  w.j av a  2  s .  c  o m*/
    var index = parseInt(part, 10);
    if (isNaN(index)) {
      return obj[part];
    } else {
      return args[index];
    }
  });
};

function formatDate(date) {
  var now = new Date();
  var date_disp;

  date_disp = date.getHours() + ':' + date.getMinutes();
  date_disp += ' - ';

  if (now - date < 24 * 60 * 60 * 1000) {
    date_disp += 'Today';
  } else if (now - date < 48 * 60 * 60 * 1000) {
    date_disp += 'Yesterday';
  } else {
    date_disp += date.getFullYear() + '-';
    var month = date.getMonth() + 1;
    if (month < 10) {
      date_disp += '0';
    }
    date_disp += month + '-' + date.getDate();
  }

  return date_disp;
}

function timeAgo(date) {
  var now = new Date();
  var diff = now - date;

  // These would be displayed as "0 minutes"
  if (diff < 60 * 1000) {
    return "Just now";
  }
  var minutes = diff / 1000 / 60;
  if (minutes < 50) {
    minutes = Math.round(minutes);
    if (minutes == 1) {
      return '1 minute ago';
    } else {
      return minutes + ' minutes ago';
    }
  }
  var hours = minutes / 60;
  if (hours < 22) {
    hours = Math.round(hours);
    if (hours === 1) {
      return '1 hour ago';
    } else {
      return hours + ' hours ago';
    }
  }
  var days = Math.round(hours / 24);
  if (days == 1) {
    return '1 day ago';
  } else {
    return days + ' days ago';
  }
}

Related

1. prettyDate(time)

   function prettyDate(time) {
       var date = new Date().setISO8601(time || "");
       console.log('date: ' + date);
       var diff = (((new Date()).getTime() - date.getTime()) / 1000);
       console.log('diff: ' + diff);
       var day_diff = Math.floor(diff / 86400);
       console.log('daydiff: ' + day_diff);
       if (isNaN(day_diff) || day_diff < 0 || day_diff >= 31) {
         console.log('some shit went bad');
   ...
   

2. setTimeToNow()

   Date.prototype.setTimeToNow = function () 
       var n = Date.relativeTo || new Date();
       this.setHours(n.getHours());
       this.setMinutes(n.getMinutes());
       this.setSeconds(n.getSeconds());
       this.setMilliseconds(n.getMilliseconds());
       return this;
   

3. time()

   Date.prototype.time = function () {
       return this.getHours().zfill(2) + ":" + this.getMinutes().zfill(2) + ":" + this.getSeconds().zfill(2);
   };
   

4. time()

   Date.prototype.time = function(){
     var hours = this.getHours();
     if (hours === 0 || hours === 24) hours = 12;
     if (hours > 12) hours -= 12;
     var minutes = this.getMinutes();
     if (minutes < 10) minutes = "0" + minutes;
     var ampm = this.getHours() >= 12 ? "pm" : "am";
     return "" + hours + ":" + minutes + ampm;
   

5. time24()

   Date.prototype.time24 = function()
     var hours = "" + this.getHours();
     var minutes = "" + this.getMinutes();
     var seconds = "" + this.getSeconds();
     if(hours.length < 2)
       hours = "0"+hours;
     if(minutes.length < 2)
       minutes = "0"+minutes;
   ...
   

6. timeAgoInWords(relativeDate)

   "use strict";
   Date.prototype.timeAgoInWords = function (relativeDate) {
       var delta;
       relativeDate = relativeDate || new Date();
       delta = parseInt((relativeDate.getTime() - this) / 1000, 10);
       if (delta < 60) {
           return 'less than a minute ago';
       } else if (delta < 120) {
         return 'about a minute ago';
   ...
   

7. timeFmt(aDate)

   var timeFmt = function (aDate) {
       if (null == aDate) {
           return "";
       else {
           return new Date(aDate).format("yyyy-MM-dd hh:mm:ss");
   };
   

8. timeSecond()

   Date.prototype.timeSecond = function () {
        return ((this.getSeconds() < 10)?"0":"") + this.getSeconds();
   

9. timeSince(date)

   String.prototype.startsWith = function (str){
     return this.indexOf(str) === 0;
   };
   timeSince = function (date) {
     var seconds = Math.floor((new Date() - date) / 1000);
     var interval = Math.floor(seconds / 31536000);
     if (interval >= 1) {
         if(interval == 1){
           return "about " + interval + " year ago";
   ...