Nodejs Time Calculate distance_of_time_in_words(to)

Method Source Code

Date.prototype.distance_of_time_in_words = function(to) {
  distance_in_milliseconds = to - this;/*from  w  w  w .j ava  2 s . c o  m*/
  distance_in_minutes = Math.round(Math.abs(distance_in_milliseconds / 60000));

  if (distance_in_minutes == 0) {
    words = "less than a minute";
  } else if (distance_in_minutes == 1) {
    words = "1 minute";
  } else if (distance_in_minutes < 45) {
    words = distance_in_minutes + " minutes";
  } else if (distance_in_minutes < 90) {
    words = "about 1 hour";
  } else if (distance_in_minutes < 1440) {
    words = "about " + Math.round(distance_in_minutes / 60) + " hours";
  } else if (distance_in_minutes < 2160) {
    words = "1 day";
  } else if (distance_in_minutes < 43200) {
    words = Math.round(distance_in_minutes / 1440) + " days";
  } else if (distance_in_minutes < 86400) {
    words = "about 1 month";
  } else if (distance_in_minutes < 525600) {
    words = Math.round(distance_in_minutes / 43200) + " months";
  } else if (distance_in_minutes < 1051200) {
    words = "about 1 year";
  } else {
    words = "over " + Math.round(distance_in_minutes / 525600) + " years";
  }

  return words;
};

Date.prototype.time_ago_in_words = function() {
  return this.distance_of_time_in_words(new Date());
};

Related

1. addTime( time )

   Date.prototype.addTime = function ( time ) {
     this.setTime( this.getTime() + time );
   };
   Date.prototype.addMinutes = function ( minutes ) {
     this.setMinutes( this.getMinutes() + minutes )
   };
   Date.prototype.addHours = function ( hours ) {
     this.setHours( this.getHours() + hours );
   };
   ...
   

2. color (datetime)

   Array.prototype.forEach.call(document.querySelectorAll('main > ul li'), function (el) {
     el.style.color = color(el.dataset.datetime);
   });
   function color (datetime) {
     if (!datetime) { return; }
     var date = new Date(datetime);
     var ago = (new Date() - date) / (8.64e+7 * 365); 
     var day = Math.ceil((date - new Date(date.getFullYear(), 0, 1)) / 8.64e+7);
     var hue = Math.floor(360 * day / 365);
   ...
   

3. currentTimeColor()

   Date.prototype.currentTimeColor = function() {
       return "#" + ((this.getHours() < 10)?"0":"") + this.getHours() + ((this.getMinutes() < 10)?"0":"") + this.getMinutes() + ((this.getSeconds() < 10)?"0":"") + this.getSeconds();
   };
   

4. dateTime()

   Date.prototype.dateTime = function() {
      var yyyy = this.getFullYear().toString();
      var mm = (this.getMonth()+1).toString(); 
      var dd  = this.getDate().toString();
      var hh = this.getHours().toString();
      var min = this.getMinutes().toString();
      var sec = this.getSeconds().toString();
      var time = (hh[1]?hh:"0"+hh[0]) + ":" + (min[1]?min:"0"+min[0]) + ":" + (sec[1]?sec:"0"+sec[0]);
      var date = (dd[1]?dd:"0"+dd[0]) + "/" + (mm[1]?mm:"0"+mm[0]) + "/" + yyyy;
   ...
   

5. datetime()

   Date.prototype.datetime = function() {
     var y = this.getFullYear();
     var M = this.getMonth() + 1;
     var d = this.getDate();
     var h = this.getHours();
     var m = this.getMinutes();
     var s = this.getSeconds();
     M = M < 10 ? '0' + M : M;
     d = d < 10 ? '0' + d : d;
   ...
   

6. fromUnixTime(value)

   Date.fromUnixTime = function(value) {
       return new Date(value * 1000);
   };
   

7. getDateTimeStr()

   Date.prototype.getDateTimeStr = function () {
     let month = this.getMonth() + 1;
     if (month < 10) month = '0' + month;
     let day = this.getDate();
     if (day < 10) day = '0' + day;
     return this.getFullYear() + '-' + month + '-' + day + ' ' + this.getTimeAmPm();
   };
   

8. getDigitalTime()

   Date.prototype.getDigitalTime = function(){  
     if  (this.getHours() > 12){
       var hour = this.getHours() - 12;
       var ampm = "PM";
     }else{
       var hour = this.getHours();
       var ampm = "AM";
     if (this.getMinutes() < 10)
   ...
   

9. getFormatTime()

   Date.prototype.getFormatTime = function (){
     var date = '';
     date += this.getFullYear() < 10 ? '0' + this.getFullYear() +'-' : this.getFullYear() +'-' ;
     date += this.getMonth() + 1 < 10 ? '0' + (this.getMonth() + 1) +'-' : (this.getMonth() + 1) + '-';
     date += this.getDate()< 10 ? '0' + (this.getDate()) : this.getDate() + ' ';
     date += this.getHours()< 10 ? '0' + (this.getHours()) +'-' : this.getHours() + ':';
     date += this.getMinutes() < 10 ? '0' + (this.getMinutes()) +'-' : this.getMinutes() + ':';
     date += this.getSeconds() < 10 ? '0' + (this.getSeconds()) : this.getSeconds();
     return date;
   ...