Nodejs Day Calculate getDaySuffix

Method Source Code

// Gen the english suffix for dates
Date.prototype.getDaySuffix =
  function(utc) {
    var n = this.getUTCDate();
    // If not the 11th and date ends at 1
    if (n != 11 && (n + '').match(/1$/))
      return 'st';
    // If not the 12th and date ends at 2
    else if (n != 12 && (n + '').match(/2$/))
      return 'nd';
    // If not the 13th and date ends at 3
    else if (n != 13 && (n + '').match(/3$/))
      return 'rd';
    else// w w w .j  av a  2s  .  c  o  m
      return 'th';
  };

Related

1. getDayFormatted()

   Date.prototype.getDayFormatted = function() {
       var day = this.getDate();
       return day < 10 ? '0' + day : day; 
   };
   

2. getDayNumber()

   Date.prototype.getDayNumber = function(){
     var oneDay = 1000*3600*24;
     var d = new Date(+this);
     d.setHours(0,0,0,0);
     var newYears = new Date();
     newYears.setDate(1);
     newYears.setMonth(0);
     newYears.setHours(0,0,0,0);
     var timeDiff = Math.abs(d.getTime() - newYears.getTime());
   ...
   

3. getDaySecondsgetDaySeconds()

   Date.prototype.getDaySeconds = function getDaySeconds() {
     return (this.getUTCHours()* 60 + this.getUTCMinutes())*60 + this.getUTCSeconds() + this.getUTCMilliseconds()/1000;
   

4. getDayShortName()

   Date.prototype.getDayShortName = function()
       "use strict";
       var dayName = ["SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT"];
       return dayName[this.getDay()];
   };
   

5. getDaySimpleSecondsgetDaySimpleSeconds()

   Date.prototype.getDaySimpleSeconds = function getDaySimpleSeconds() {
     return Math.floor(this.getDaySeconds()/ (24*60*60) * (10*100*100));
   

6. getDaysBetweenDates(date2)

   'use strict';
   Date.prototype.getDaysBetweenDates = function (date2) {
     var diff = this.getTime() - new Date(date2).getTime();
     return Math.round(diff / (1000 * 60 * 60 * 24));
   };
   

7. getDaysTillNow(since)

   Date.prototype.getDaysTillNow = function (since) {
       var past = new Date(since.getFullYear(), since.getMonth(), since.getDate());
       var today = new Date(this.getFullYear(), this.getMonth(), this.getDate());
       return (today - past) / (24 * 3600000);
   };
   

8. getDaysUntil(futureDay)

   Date.prototype.getDaysUntil = function(futureDay) {
       var future = new Date(futureDay.getFullYear(), futureDay.getMonth(), futureDay.getDate());
       var today = new Date(this.getFullYear(), this.getMonth(), this.getDate());
       return (future - today) / (24 * 3600000);
   };
   

9. getFistDay()

   Date.prototype.getFistDay = function () {
       var here = new Date(this.getFullYear(), this.getMonth(), 1);
       return here.getDay();
   };