External module "assert/is-leap-year/docs/types/index.d"

Export assignment isLeapYear

• isLeapYear(value?: any): boolean

• Tests whether a value corresponds to a leap year in the Gregorian calendar.

  Notes

  • According to the Gregorian calendar, every year that is exactly divisible by 4 is a leap year, except those years which are also divisible by 100 and not by 400 (e.g., 1900).

  Parameters

  • Optional value: any

    input value

  Returns boolean

  boolean whether a value corresponds to a leap year

  Example

  var bool = isLeapYear();
  // returns <boolean>

  Example

  var bool = isLeapYear( new Date() );
  // returns <boolean>

  Example

  var bool = isLeapYear( 1996 );
  // returns true

  Example

  var bool = isLeapYear( 2001 );
  // returns false