24 lines
626 B
Markdown
24 lines
626 B
Markdown
---
|
|
title: addDaysToDate
|
|
tags: date,intermediate
|
|
---
|
|
|
|
Calculates the date of `n` days from the given date, returning its string representation.
|
|
|
|
- Use `new Date()` to create a date object from the first parameter.
|
|
- Use `Date.getDate()` and `Date.setDate()` to add `n` days to the given date.
|
|
- Use `Date.prototype.toISOString()` to return a string in `yyyy-mm-dd` format.
|
|
|
|
```js
|
|
const addDaysToDate = (date, n) => {
|
|
d = new Date(date);
|
|
d.setDate(d.getDate() + n);
|
|
return d.toISOString().split('T')[0];
|
|
};
|
|
```
|
|
|
|
```js
|
|
addDaysToDate('2020-10-15', 10); // '2020-10-25'
|
|
addDaysToDate('2020-10-15', -10); // '2020-10-05'
|
|
```
|