Build a Leap Year calculator

JavaScript
1

i keep getting the test tips

5. With 2024 as the value of the year variable, the result should be 2024 is a leap year.
6. With 2000 as the value of the year variable, the result should be 2000 is a leap year.
7. With 1900 as the value of the year variable, the result should be 1900 is not a leap year.
11. You should output the result to the console using console.log().
// tests completed
// console output
2000 is a leap year.

with this code

 let year = 2000;
function isLeapYear(year) {
  if (year % 400 === 0) {
    return true; //Divisible by 400 -> Leap Year
  } else if(year % 100 === 0) {
    return false; // Divisible by 100 but not 400 -> not Leap
  } else if(year % 4 === 0) {
    return true; //Divisible by 4 but not 100 -> Leap Year
  } else {
    return false;
  }

}
let result = isLeapYear(year);
let message = year + (result ? " is a leap year." : " is not a leap year.");

console.log(message);

I have seen some explanation but still dong get the logic.

any help

2

Hi @footroot :waving_hand:

Next time you need help on a specific challenge, please use the Help button located at the bottom of your page.

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This way it is easier for everyone to understand your problem (it automatically sends your codes and provide a link).

If you can’t do this, please provide a link to the challenge, so that we can test by ourselves what’s wrong with your code. Thank you !

3

I found the link (tell me if it is the good one):

4

So basically, you are told that :

A leap year is a year that is divisible by 4, except for years that are divisible by 100 and not divisible by 400.

I will write it in pseudo code :

year = 2000
isLeapYear = False
IF year % 4 ==0 :
  EXCEPT year % 100 == 0 AND NOT year % 400 == 0 //This except blocks the execution if it is false
  isLeapYear = true

This is pseudo code, which means not real code, but it is here to make the logic clearer.

Hope this helped you, enjoy coding :slight_smile:

5

The issue is that we’re having the correct output shown, but we still can’t advance.