EN
JavaScript - check if specific year is leap
0 points
In this article, we would like to show you how to check if the specific year is leap in JavaScript.
Quick solution:
xxxxxxxxxx1
const isLeap = (year) => {2
return year % 400 === 0 || (year % 4 === 0 && year % 100 !== 0);3
}4
5
console.log(isLeap(2000)); // true6
console.log(isLeap(2001)); // false
In this example, we check if the specific year is leap with the following conditions:
- check if the year is a multiple of
400, - or if it's a multiple of
4and not multiple of100.
Then we return the appropriate value true or false depending on the result.
Runnable example:
xxxxxxxxxx1
function isLeap(year) {2
if (year % 400 === 0 || (year % 4 === 0 && year % 100 !== 0)) {3
return true;4
}5
return false;6
}7
8
console.log(isLeap(2000)); // true9
console.log(isLeap(2001)); // false10
console.log(isLeap(2002)); // false11
console.log(isLeap(2003)); // false12
console.log(isLeap(2004)); // trueOutput:
xxxxxxxxxx1
true2
false3
false4
false5
true