621
In this example we check if a year is a leap year
Some examples use a formula to check if a year is a leap year, this example checks if the month of February contains 29 days in the year specified
Example 1
// program to check leap year
function checkLeapYear(year)
{
const leap = new Date(year, 1, 29).getDate() === 29;
if (leap)
{
console.log(year + ' is a leap year');
}
else
{
console.log(year + ' is not a leap year');
}
}
// remove comment to take input
// const year = prompt('Enter a year:');
checkLeapYear(2000);
checkLeapYear(2002);
checkLeapYear(2004);
When you run this you will see something like this
2000 is a leap year 2002 is not a leap year 2004 is a leap year
You can remove the comment to take user input like this
// program to check leap year
function checkLeapYear(year)
{
const leap = new Date(year, 1, 29).getDate() === 29;
if (leap)
{
console.log(year + ' is a leap year');
}
else
{
console.log(year + ' is not a leap year');
}
}
// remove comment to take input
const year = prompt('Enter a year:');
checkLeapYear(year);