How to check a Leap Year in JavaScript
In this post we will give you information about How to check a Leap Year in JavaScript. Hear we will give you detail about How to check a Leap Year in JavaScriptAnd how to use it also give you demo for it if it is necessary.
we are going to learn about how to check if a given year is a leap year or not inJavaScript.
What is a Leap Year?
A leap year is a year that contains 366 days, where an extra day is added to February so that in a leap year February contains 29 days instead of 28.
A Leap year occurs in every 4 years.
Checking leap year
Let’s write a function that is used to check if a given year is a leap year or not.
function isLeapYear(year){ return (year%4 === 0 && year%100 !==0 || year%400 === 0);}console.log(isLeapYear(2020)); // trueconsole.log(isLeapYear(2019)); // falseThe logic is if a given year is divisible by 4 and divisible by 100 but not divisible by 400 it is a common year else the given year is a leap year.
According to this logic, the years 2000 and 2400 are leap years, while 1700, 1800, 1900, 2100, 2200, 2300, and 2500 are not leap years.
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