Build a Leap Year Calculator - Build a Leap Year Calculator

JavaScript
1

Tell us what’s happening:

No entiendo por que no me pasa el código, lo he probado en el navegador y si realiza lo solicitado. ¿Alguien me puede guiar un poco?

Your code so far

function isLeapYear(number){
	if (number.toString().length !== 4 || isNaN(number)){
		return `${number} is not a valid number`;
	} else if ((number % 4 !== 0) || (number % 4 === 0 && number % 100 === 0 && number % 400 !== 0)){
    return `${number} is not a leap year`;
  } else if (number % 4 == 0 && number % 100 !== 0) {
    return `${number} is a leap year`;
  } else { return "Error inesperado";

  }
}
let year = prompt("año");
let result = isLeapYear(year);
console.log(result);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:137.0) Gecko/20100101 Firefox/137.0

Challenge Information:

Build a Leap Year Calculator - Build a Leap Year Calculator

2

check with attention what you are asked to return, check that the string matches to the last character

3

Lo siento pero no entiendo muy bien el inglés, he repasado el código y comprobado en navegador y me da en consola lo que pide. Sin embargo me sigue diciendo que no pasa el ejercicio.

let year;
let result;
function isLeapYear(number){
	if (number.toString().length !== 4 || isNaN(number)){
		return `${number} is not a valid number`;

	} else if ((number % 4 !== 0) || (number % 4 === 0 && number % 100 === 0 && number % 400 !== 0)){
    return `${number} is not a leap year`;

  }	else if ((number % 4 == 0) || (number % 4 === 0 && number % 100 === 0 && number % 400 == 0)){
    return `${number} is a leap year`;

  } else if (number % 4 == 0 && number % 100 !== 0) {
    return `${number} is a leap year`;

  } else { return "Error";

  }

}
year = 2024;
result = isLeapYear(year);

console.log(result);

year = 2000;
result = isLeapYear(year);

console.log(result);

year = 1900;
result = isLeapYear(year);

console.log(result);
4

Gracias por guiarme, el error era “.” al final de la cadena de texto que se muestra en consola.