Nodejs Week Get getWeek()

Method Source Code

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 + ").");

Related

1. getWeek()

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

2. getWeek()

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

3. getWeek()

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

4. 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);
   

5. 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);
   ...
   

6. 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);
   };
   

7. 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();
   ...
   

8. getWeek()

   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);
   ...