Checks if a given year is a leap year.
A leap year is exactly divisible by 4 except for century years (years ending with 00).
The century year is a leap year only if it is perfectly divisible by 400.
Parameters
year: number
The year to check. Must be a valid year number.
Returns boolean
true if the year is a leap year, false otherwise.
Throws
Will throw an error if the year is not a valid number.
Checks if a given year is a leap year. A leap year is exactly divisible by 4 except for century years (years ending with 00). The century year is a leap year only if it is perfectly divisible by 400.