Nodejs Week Get getWeek()

Method Source Code

Date.prototype.getWeek = function () {
    var determinedate = new Date();
    determinedate.setFullYear(this.getFullYear(), this.getMonth(), this.getDate());
    var D = determinedate.getDay();
    if (D == 0) D = 7;
    determinedate.setDate(determinedate.getDate() + (4 - D));
    var YN = determinedate.getFullYear();
    var ZBDoCY = Math.floor((determinedate.getTime() - new Date(YN, 0, 1, -6)) / 86400000);
    var WN = 1 + Math.floor(ZBDoCY / 7);
    return WN;/*from   w w  w  .  j  ava2 s .co  m*/
};

Related

1. getWeek()

   Date.prototype.getWeek = function() {
     var date = new Date(this.getTime());
     date.setHours(0, 0, 0, 0);
     date.setDate(date.getDate() + 3 - (date.getDay() + 6) % 7);
     var week1 = new Date(date.getFullYear(), 0, 4);
     return 1 + Math.round(((date.getTime() - week1.getTime()) / 86400000 - 3 + (week1.getDay() + 6) % 7) / 7);
   function getDay(yyyyMMdd) {
     return new Date(yyyyMMdd).getDay();
   ...
   

2. getWeek()

   Date.prototype.getWeek = function() {
     var date = new Date(this.getTime());
     date.setHours(0, 0, 0, 0);
     date.setDate(date.getDate() + 3 - (date.getDay() + 6) % 7);
     var week1 = new Date(date.getFullYear(), 0, 4);
     return 1 + Math.round(((date.getTime() - week1.getTime()) / 86400000 - 3 + (week1.getDay() + 6) % 7) / 7);
   Date.prototype.getWeekYear = function() {
     var date = new Date(this.getTime());
   ...
   

3. getWeek()

   'use strict';
   Date.prototype.getWeek = function() {
     var onejan = new Date(this.getFullYear(), 0, 1);
     return Math.ceil((((this - onejan) / 86400000) + onejan.getDay() + 1) / 7);
   };
   

4. getWeek()

   Date.prototype.getWeek = function() {
       var date = new Date(this.getTime());
       date.setHours(0, 0, 0, 0);
       date.setDate(date.getDate() + 3 - (date.getDay() + 6) % 7);
       var week1 = new Date(date.getFullYear(), 0, 4);
       return 1 + Math.round(((date.getTime() - week1.getTime()) / 86400000
           - 3 + (week1.getDay() + 6) % 7) / 7);
   Date.prototype.getWeekYear = function() {
   ...
   

5. getWeek()

   Date.prototype.getWeek = function () {
       var target  = new Date(this.valueOf());
       var dayNr   = (this.getDay() + 6) % 7;
       target.setDate(target.getDate() - dayNr + 3);
       var firstThursday = target.valueOf();
       target.setMonth(0, 1);
       if (target.getDay() != 4) {
           target.setMonth(0, 1 + ((4 - target.getDay()) + 7) % 7);
       return 1 + Math.ceil((firstThursday - target) / 604800000);
   

6. getWeek()

   Date.prototype.getWeek = function()
       var today = new Date(this.setHours(0, 0, 0, 0));
       var date = today.getDate() - today.getDay();
       var StartDate = new Date(today.setDate(date));
       var EndDate = new Date(today.setDate(date + 6));
       return [StartDate, EndDate];
   

7. getWeek()

   Date.prototype.getWeek = function () {
     var onejan = new Date(this.getFullYear(), 0, 1);
     var time   = this.getMilliseconds() +
                  this.getSeconds() * 1000 +
                  this.getMinutes() * 60 * 1000 +
                  this.getHours() * 60 * 60 * 1000;
     return Math.ceil((((this - onejan - time) / 86400000) + onejan.getDay() + 1) / 7);
   };
   

8. getWeek(dowOffset)

   Date.prototype.getWeek = function (dowOffset) {
       dowOffset = typeof(dowOffset) == 'int' ? dowOffset : 1; 
       var newYear = new Date(this.getFullYear(),0,1);
       var day = newYear.getDay() - dowOffset; 
       day = (day >= 0 ? day : day + 7);
     var daynum = Math.floor((this.getTime() - newYear.getTime() - 
     (this.getTimezoneOffset()-newYear.getTimezoneOffset())*60000)/86400000) + 1;
     var weeknum;
     if(day < 4) {
   ...
   

9. getWeek(dowOffset)

   Date.prototype.getWeek = function (dowOffset) {
     dowOffset = typeof(dowOffset) == 'int' ? dowOffset : 0; 
     var newYear = new Date(this.getFullYear(),0,1);
     var day = newYear.getDay() - dowOffset; 
     day = (day >= 0 ? day : day + 7);
     var daynum = Math.floor((this.getTime() - newYear.getTime() -
     (this.getTimezoneOffset()-newYear.getTimezoneOffset())*60000)/86400000) + 1;
     var weeknum;
     if(day < 4) {
   ...