leapYear.js

/**
 * year will be a leap year if the year is divisible by 4
 * 
 */

function isLeapYear (year) {
	if (year % 4 === 0){
		return true;
	}
	else{
		return false;
	}
}

const isLipi = isLeapYear(2052);
console.log(isLipi);


/**
 * 1. those year that is not divisible by 100, if the year is divisible 4;
 * then it will be a leap year;
 * 2. if the year is divisible by 400, then it is leap year;
 * 3. else it is not a leap year
 */

function isLeapYear2 (year) {
	if (year % 100 !== 0 && year % 4 === 0){
		return true;
	}
	else if (year % 400 === 0){
		return true;
	}
	else{
		return false;
	}
}

const isLeap = isLeapYear2(2100);
const isLeap2 = isLeapYear2(2400);
const isLeap3 = isLeapYear2(1900);
const isLeap4 = isLeapYear2(2052);

console.log(isLeap, isLeap, isLeap3, isLeap4);