Nodejs Day Calculate numDays()

Here you can find the source of numDays()

Method Source Code

Date.prototype.numDays = function() {

  var d = new Date(this.getFullYear(), this.getMonth() + 1, 0);

  return d.getDate();

};

Related

  1. getToday()
    Date.prototype.getToday = function () {
        return this.getFullYear()+'-'+this.getMonth()+'-'+this.getDate();
    
  2. getToday()
    Date.prototype.getToday = function () {
        return this.getFullYear()+'-'+this.getMonth()+'-'+this.getDate();
    
  3. isDST() //t is the date object to check, returns true if daylight saving time is in effect.
    Date.prototype.isDST = Date.prototype.isDST || function() { 
        var jan = new Date(this.getFullYear(),0,1);
        var jul = new Date(this.getFullYear(),6,1);
        return Math.min(jan.getTimezoneOffset(),jul.getTimezoneOffset()) == this.getTimezoneOffset();
    };
    exports.DataUtilities = {};
    
  4. isLastDay()
    Date.prototype.isLastDay = function(){
        if(!this.isToDay()){
            var today = new Date();
            return this.getTime() < today.getTime();
        return false;
    };
    
  5. nextDayfunciton()
    Date.prototype.nextDay = funciton() {
      let today = this.getDate();
      return new Date(this.setDate(today + 1));
    
  6. past(pattern,pastDays)
    Date.prototype.past = function(pattern,pastDays){
        var pastday = new Date((this - 0) - 1000*60*60*24*pastDays);
        var pattern = pattern;    
        var dateObj = {
            "Y" : pastday.getFullYear(),
            "M" : pastday.getMonth()+1,
            "D" : pastday.getDate(),
            "h" : pastday.getHours(),
            "m" : pastday.getMinutes(),
    ...
    
  7. relativeDays()
    Date.prototype.relativeDays = function() {
      var now = new Date();
      var interval = now.getTime() - this.getTime();
      interval = Math.floor(interval / (1000 * 60 * 60 * 24));
      return interval;
    };
    
  8. sGetDay()
    var weekdays = ["monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday"];
    Date.prototype.sGetDay = function() {
      return (this.getDay() + 6) %7;
    var d = new Date();
    var today = weekdays[d.sGetDay()];
    
  9. setToMondayMidnight()
    Date.prototype.setToMondayMidnight = function() {
        var weekDay = this.getDay();
        if (weekDay === 0) { 
            weekDay = 7;
        this.setDate(this.getDate() - weekDay + 1);
        this.timeToMidnight();
    };