Nodejs Date Get getDateOffset(target)

Method Source Code

Date.prototype.getDateOffset = function(target) {
    var milliSeconds = target.getTime() - this.getTime();
    return Math.ceil(milliSeconds/1000/60/60/24);
};

Related

1. getCode()

   Date.prototype.getCode = function(){
       var start = new Date(this.getFullYear(), 0, 0);
       var diff = this - start;
       var oneDay = 1000 * 60 * 60 * 24;
       var day = Math.floor(diff / oneDay);
       return ( 24 * day ) + this.getHours();
   };
   

2. getDST()

   Date.prototype.getDST = function() {
       return this.getTimezoneOffset() - this.getStdTimezone();
   

3. getDate2()

   Date.prototype.getDate2 = function () {
      var date = this.getDate();
      return (date < 10 ? '0' : '') + date;
   };
   

4. getDateDiff(difference)

   function getDateDiff(difference) {
     var ret    = {};
     ret.days  = Math.floor(difference / 1000 / 60 / 60 / 24);
     ret.hours  = Math.floor(difference / 1000 / 60 / 60 - (24 * ret.days));
     ret.mins  = Math.floor(difference / 1000 / 60 - (24 * 60 * ret.days) - (60 * ret.hours));
     ret.secs  = Math.floor(difference / 1000 - (24 * 60 * 60 * ret.days) - (60 * 60 * ret.hours) - (60 * ret.mins));
     return ret;
   

5. getDateDifference(otherDate)

   Date.prototype.getDateDifference = function(otherDate){
     var oneDay = 1000*3600*24;
     var d = new Date(+this);
     d.setHours(0,0,0,0);
     otherDate.setHours(0,0,0,0);
     var timeDiff = d.getTime() - otherDate.getTime();
     return Math.floor(timeDiff/oneDay);
   

6. getDateOrdinal()

   Date.prototype.getDateOrdinal = function()
     var n = this.getDate();
     var ord = 'th';
     if (n % 10 == 1 && n % 100 != 11)
       ord = 'st';
     else if (n % 10 == 2 && n % 100 != 12)
   ...
   

7. getDateParts()

   var convertMonthIndexToStr = function(monthIndex) {
     var map = [
       'January', 'February', 'March', 'April',
       'May', 'June', 'July', 'August',
       'September', 'October', 'November', 'December'
     ];
     return map[monthIndex];
   var convertDayOfWeekIndexToStr = function(dayOfWeekIndex) {
   ...
   

8. getDateStamp()

   Date.prototype.getDateStamp = function() {
     let month = this.getMonth()+1;
     let day = this.getDate();
     return [this.getFullYear(),
       (month > 9 ? '' : '0') + month,
       (day > 9 ? '' : '0') + day
     ].join('');
   };
   

9. getDisplayDate()

   Date.prototype.getDisplayDate = function()
     return this.getDate() > 9 ? "" : "0" + this.getDate();
   };
   Date.prototype.getDisplayMonth = function()
     return this.getMonth() > 9 ? "" : "0" + this.getMonth();
   };
   Date.prototype.addMilliseconds = function(count)
   ...