isLeapYear javascript Code Snippet in 2025
datebeginner
Last Updated: 29 November 2025
Checks if the given year is a leap year.
- Use
new Date(), setting the date to February 29th of the givenyear. - Use
Date.prototype.getMonth()to check if the month is equal to1.
const isLeapYear = year => new Date(year, 1, 29).getMonth() === 1;isLeapYear(2019); // false
isLeapYear(2020); // truejavascript snippet similar to isLeapYear For You in November 2025
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