JavaScript: Get the amount of days of a year

Last update on April 24 2023 07:03:36 (UTC/GMT +8 hours)

JavaScript Datetime: Exercise-14 with Solution

Write a JavaScript function to get the number of days in a year.

Test Data :
console.log(days_of_a_year(2015));
365
console.log(days_of_a_year(2016));
366

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript function to get the amount of days of a year</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function days_of_a_year(year) 
{
   
  return isLeapYear(year) ? 366 : 365;
}

function isLeapYear(year) {
     return year % 400 === 0 || (year % 100 !== 0 && year % 4 === 0);
}

console.log(days_of_a_year(2015));
console.log(days_of_a_year(2016));

Sample Output:

365
366

Flowchart:

Live Demo:

See the Pen JavaScript - Get the amount of days of a year-date-ex- 14 by w3resource (@w3resource) on CodePen.

Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript function that will return the number of minutes in hours and minutes.
Next: Write a JavaScript function to get the quarter (1 to 4) of the year.