js leap year calculator
// https://www.mathsisfun.com/leap-years.html 
function isLeapYear(year) {
 
    if(year % 400 === 0){
        return ("yes");
    } if(year % 100 === 0){
        return ("no");
    } if (year % 4 === 0){
        return ("yes");
    } else {
        return ("no");
    }
    
}
isLeap(2024);
