22 lines
490 B
Markdown
22 lines
490 B
Markdown
---
|
|
title: Check for leap year
|
|
tags: date
|
|
cover: flowering-hills
|
|
firstSeen: 2020-02-05T14:00:03+02:00
|
|
lastUpdated: 2020-10-20T23:02:01+03:00
|
|
---
|
|
|
|
Checks if the given `year` is a leap year.
|
|
|
|
- Use the `Date` constructor, setting the date to February 29th of the given `year`.
|
|
- Use `Date.prototype.getMonth()` to check if the month is equal to `1`.
|
|
|
|
```js
|
|
const isLeapYear = year => new Date(year, 1, 29).getMonth() === 1;
|
|
```
|
|
|
|
```js
|
|
isLeapYear(2019); // false
|
|
isLeapYear(2020); // true
|
|
```
|