Nodejs Day in Month getDaysInMonth()

Method Source Code

/**/*from www .j a v  a 2s.co m*/
 * Adds the day in month to the Date prototype
 * @return {Date}
 */

Date.prototype.getDaysInMonth = function() {
  return Date.getDaysInMonth(this.getFullYear(), this.getMonth());
};

Related

1. daysInMonth()

   Date.prototype.daysInMonth = function() {
       return 32 - new Date(this.getYear(), this.getMonth(), 32).getDate();
   };
   

2. daysInMonth()

   dateFormat.i18n = {
     dayNames: [
       "Dom", "Lun", "Mar", "Mie", "Jue", "Vie", "Sab",
       "Domingo", "Lunes", "Jueves", "Mi?oles", "Jueves", "Viernes", "S?do"
     ],
     monthNames: [
       "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
       "Enero", "Febrero", "Marzo", "Abril", "Mayo", "Junio", "Julio", "Agosto", "Septiembre", "Octubre", "Noviembre", "Diciembre"
     ]
   ...
   

3. daysInMonth()

   Date.prototype.daysInMonth = function () {
     return new Date(this.getFullYear(), this.getMonth() + 1, 0).getDate();
   };
   

4. getDaysInMonth()

   Date.prototype.getDaysInMonth = function () {
       var here = new Date(this.getTime());
       here.setDate(32);
       return 32 - here.getDate();
   };
   

5. getDaysInMonth()

   Date.prototype.getDaysInMonth = function () {
       Date.daysInMonth[1] = this.isLeapYear() ? 29 : 28;
       return Date.daysInMonth[this.getMonth()];
   

6. getDaysInMonth()

   Date.prototype.getDaysInMonth = function ()
       return Date.getDaysInMonth(this.getFullYear(), this.getMonth());
   };
   

7. getDaysInMonth()

   Date.prototype.getDaysInMonth = function () {
       var m = this.getMonth() + 1,
           y = this.getFullYear();
       return /8|3|5|10/.test(--m) ? 30 : m == 1 ? (!(y % 4) && y % 100) || !(y % 400) ? 29 : 28 : 31;
   };
   

8. getDaysInMonth(year, month)

   Date.getDaysInMonth = function(year, month) {
     return [
       31, (Date.isLeapYear(year) ? 29 : 28),
       31, 30, 31, 30, 31, 31, 30, 31, 30, 31
     ][month];
   };
   

9. getDaysInMonth(year, month)

   Date.getDaysInMonth = function (year, month)
       return [31, (Date.isLeapYear(year) ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month];
   };