Nodejs Week Get getWeek()

Here you can find the source of getWeek()

Method Source Code

//this is some hardcore shit, right^^
Date.prototype.getWeek = function() {
  var onejan = new Date(this.getFullYear(),0,1);
  var today = new Date(this.getFullYear(),this.getMonth(),this.getDate());
  var dayOfYear = ((today - onejan + 86400000)/86400000);
  return Math.ceil(dayOfYear/7)
};
var today = new Date();
var currentWeekNumber = today.getWeek();
console.log(currentWeekNumber);// w w  w .  ja  va 2  s  . c  o  m
console.log("The current week number is:\n"+currentWeekNumber);
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Related

  1. getWeek()
    function getRandomColor() {    
      return "rgb("+Math.floor((Math.random()*255)+1)+","+
        Math.floor((Math.random()*255)+1)+","+
        Math.floor((Math.random()*255)+1)+")";
    Date.prototype.getWeek = function() {
      var onejan = new Date(this.getFullYear(),0,1);
      return Math.ceil((((this - onejan) / 86400000) + onejan.getDay()+1)/7);
    
  2. getWeek()
    Date.prototype.getWeek = function() {
        var onejan = new Date(this.getFullYear(), 0, 1);
        return Math.ceil((((this - onejan) / 86400000) + onejan.getDay() + 1) / 7);
    var weekNumber = (new Date()).getWeek();
    var dayNames = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
    var now = new Date();
    document.write(dayNames[now.getDay()] + " (" + weekNumber + ").");
    
  3. getWeek()
    Date.prototype.getWeek = function() {
        var tmpDate = new Date();
        tmpDate.setFullYear(this.getFullYear(), this.getMonth(), this.getDate());
        var D = tmpDate.getDay();
        if(D == 0) D = 7;
        tmpDate.setDate(tmpDate.getDate() + (4 - D));
        var YN = tmpDate.getFullYear();
        var ZBDoCY = Math.floor((tmpDate.getTime() - new Date(YN, 0, 1, -6)) / 86400000);
        var WN = 1 + Math.floor(ZBDoCY / 7);
    ...
    
  4. getWeek()
    Date.prototype.getWeek = function(){
        var d = new Date(+this);
        d.setHours(0,0,0);
        d.setDate(d.getDate()+4-(d.getDay()||7));
        return Math.ceil((((d-new Date(d.getFullYear(),0,1))/8.64e7)+1)/7);
    };
    
  5. getWeek()
    Date.prototype.getWeek = function() {
      var onejan = new Date(this.getFullYear(), 0, 1);
      return Math.ceil((((this - onejan) / 86400000) + onejan.getDay() + 1) / 7);
    var today = new Date();
    var daynum = today.getDOY();
    var weeknr = (new Date()).getWeek();
    var d = (new Date()).getDay();
    var day = (new Date()).getDate();
    ...
    
  6. 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);
    
  7. getWeek()
    Date.prototype.getWeek = function () {
        var onejan = new Date(this.getFullYear(), 0, 1);
        return Math.ceil((((this - onejan) / 86400000) + onejan.getDay() + 1) / 7);
    function sumArr(arr) {
        return arr.reduce(function (a, b) { return a + b; }, 0);
    function formatTime(val) {
        var sec_num = parseInt(val, 10); 
    ...
    
  8. getWeek()
    Date.prototype.getWeek = function(){
        var day_miliseconds = 86400000,
            onejan = new Date(this.getFullYear(),0,1,0,0,0),
            onejan_day = (onejan.getDay()==0) ? 7 : onejan.getDay(),
            days_for_next_monday = (8-onejan_day),
            onejan_next_monday_time = onejan.getTime() + (days_for_next_monday * day_miliseconds),
            first_monday_year_time = (onejan_day>1) ? onejan_next_monday_time : onejan.getTime(),
            this_date = new Date(this.getFullYear(), this.getMonth(),this.getDate(),0,0,0),
            this_time = this_date.getTime(),
    ...
    
  9. 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();
    ...