Answer by Hamfri for How to determine whether a year is a leap year in JavaScript

The following code block will work well on Javascript and also on Typescript if you remove the function keyword. To understand the logic behind this implementation have a look at this link How to determine whether a year is a leap year.

 function isLeapYear(year) {    let isLeapObj = {};    if ((year % 4 === 0 && year % 100 != 0) || year % 400 === 0) {      isLeapObj['isLeap'] = true;      isLeapObj['days'] = 366;    } else {      isLeapObj['isLeap'] = false;      isLeapObj['days'] = 365;    }    return isLeapObj;  }x = isLeapYear(2020);console.log(x);

For Javscript use the following code