javascript-problem-solving/3-leapYear.js at master · Jisan-mia/javascript-problem-solving · GitHub

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function isLeapYear(year) {

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

const checkLeapYear = isLeapYear(1700);
console.log(checkLeapYear);

//solution number 2
function leapYear(year) {
    if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
        return true;
    } else {
        return false;
    }
}
console.log(leapYear(2000))

//solution number 3

function checkingLeapYear(year) {
    if (year % 4 == 0) {
        if (year % 100 != 0) {
            return true;
        } else if (year % 400 == 0) {
            return true;
        } else {
            return false;
        }
    } else {
        return false;
    }
}
console.log(checkingLeapYear(2200))