How to usenewDate() in Javascript
- A
Date
object is created with the given year, month (1 for February), and day (29). - The
getMonth()
method returns the month (0-indexed), andgetDate()
returns the day of the month. - If the month is still February, and the day is 29, then it is a leap year.
Example: In this example, we are using newDate().
function isLeapYearUsingDate(year) {
// Create a new date on February 29th of the given year
let leapDate = new Date(year, 1, 29);
// Check if the month is still February and the date is 29
return leapDate.getMonth() === 1 && leapDate.getDate() === 29;
}
// Example usage:
let yearToCheck = 2024;
let result = isLeapYearUsingDate(yearToCheck);
console.log(result ? yearToCheck + " is a leap year." : yearToCheck + " is not a leap year.");
Output
2024 is a leap year.
JavaScript Program to Check if a Given Year is Leap Year
We will explore how to determine whether a given year is a leap year or not. Leap years, which occur approximately every four years, have special conditions that must be met for validation.
To identify a leap year, two conditions must be satisfied:
- The year must be a multiple of 400.
- Alternatively, if the year is a multiple of 4 and not a multiple of 100, it’s also considered a leap year.
By understanding and implementing these conditions in our JavaScript program, we’ll be able to accurately determine whether any given year qualifies as a leap year.
Below are the approaches:
Table of Content
- Traditional Leap Year Logic
- Using newDate()
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