Leap year

Write a function isLeapYear(year) that takes in an integer number year as the argument and returns true if year is a leap year, and false otherwise.
A leap year is:

• divisible by 400
• divisible by 4, but not by 100

Instructions

• Should return false if year is less than or equal to 0.
• Should return true if year is a leap year.
• Should return false if year is not a leap year.

Example test cases

isLeapYear(2000) => true // divisible by 400
isLeapYear(2001) => false // not divisible by 4 or 400
isLeapYear(2004) => true // divisible by 4, but not by 100
isLeapYear(2100) => false // divisible by 4 and 100

Hints

• You can use multiple if statements to return early when certain criteria are met.