Nodejs Year Leap Check isLeapYear(year)

Method Source Code

/**/*w w  w.j ava2s. com*/
 * Checks if given year is a leap year
 * @param {int} year
 * @return {boolean}
 */

Date.isLeapYear = function(year) {
  return (((year % 4 === 0) && (year % 100 !== 0)) || (year % 400 === 0));
};

Related

1. isLeapYear()

   Date.prototype.isLeapYear = function(){
     return (0==this.getYear()%4 && ((this.getYear()%100 != 0) || (this.getYear()%400 == 0))); 
   

2. isLeapYear()

   Date.prototype.isLeapYear = function () {
       var year = this.getFullYear();
       return ((year & 3) == 0 && (year % 100 || (year % 400 == 0 && year)));
   

3. isLeapYear()

   Date.prototype.isLeapYear = function () {
     return new Date(this.getFullYear(), 1, 29).getDate() == 29;
   };
   

4. isLeapYear()

   Date.prototype.isLeapYear = function() {
     return Date.isLeapYear(this.getFullYear());
   };
   

5. isLeapYear()

   Date.prototype.isLeapYear = function ()
       var y = this.getFullYear();
       return (((y % 4 === 0) && (y % 100 !== 0)) || (y % 400 === 0));
   };
   

6. isLeapYear(year)

   Date.isLeapYear = function (year)
       return (((year % 4 === 0) && (year % 100 !== 0)) || (year % 400 === 0));
   };
   

7. isLeapYear(year)

   function {
     return year%4==0&&(year%100!=0||year%400==0);