Nodejs Day Calculate getDayNumber()

Method Source Code

Date.prototype.getDayNumber = function(){

  //One day in milliseconds
  var oneDay = 1000*3600*24;

  var d = new Date(+this);
  d.setHours(0,0,0,0);//from  www .jav a  2 s .  c o m

  //Creating new years.
  var newYears = new Date();
  newYears.setDate(1);
  newYears.setMonth(0);
  newYears.setHours(0,0,0,0);

  var timeDiff = Math.abs(d.getTime() - newYears.getTime());

  //Have to add one because Jan 1st is the first day.
  return Math.ceil(timeDiff/oneDay) + 1;
}

Related

1. MaxDayOfDate(date)

   Date.prototype.MaxDayOfDate = function(date) {
       var nowDate = new Date(date.getFullYear(), date.getMonth() + 1, 0);
       var lastDay = nowDate.getDate();
       return lastDay;
   };
   

2. countDown(withDays)

   Date.prototype.countDown = function(withDays){
       addDays = (typeof withDays === 'undefined') ? true : withDays;
     var timeLeft = (this/1000) - ((new Date())/1000)
     var days, hours, minutes, seconds;
       var timeArray = []
       if(addDays){
        days = parseInt(timeLeft/86400)
          timeArray.push(days)
        timeLeft = timeLeft % 86400
   ...
   

3. dayName(language)

   Date.prototype.dayName = function(language) {
     var dayName = "";
     language = language || 'en';
     switch(language.toLowerCase()) 
       case 'en':
         dayName = ['Sunday','Monday','Tuesday','Wednesday', 'Thursday','Friday','Saturday'];
         break;
       case 'es':
   ...
   

4. dayNamesDate.dayNames;

   Date.dayNames = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
   Date.monthNames = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
   Date.prototype.dayNames = Date.dayNames;
   Date.prototype.monthNames = Date.monthNames;
   Date.prototype.getDayName = function() {
     return this.dayNames[this.getDay()];
   };
   Date.prototype.getDayNameAbbr = function() {
     return this.getDayName().slice(0,4);
   ...
   

5. getDayFormatted()

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

6. getDaySecondsgetDaySeconds()

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

7. getDayShortName()

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

8. getDaySimpleSecondsgetDaySimpleSeconds()

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

9. getDaySuffix

   Date.prototype.getDaySuffix =
     function(utc) {
       var n = this.getUTCDate();
       if (n != 11 && (n + '').match(/1$/))
         return 'st';
       else if (n != 12 && (n + '').match(/2$/))
         return 'nd';
       else if (n != 13 && (n + '').match(/3$/))
         return 'rd';
   ...